Understandable Statistics Concepts and Methods 12th Edition by Charles Henry Brase - Test Bank

Understandable Statistics Concepts and Methods 12th Edition by Charles Henry Brase – Test Bank

 

Instant Download – Complete Test Bank With Answers

 

 

Sample Questions Are Posted Below

 

1. Give an example of a discrete random variable.
a. The number of inches of rainfall in a county
b. The number of beverages sold at a lemonade stand
c. The number of gallons of concrete used at a construction site
d. The time required for a runner to finish a marathon
e. The temperature of a pot roast cooking in an oven
ANSWER:  b
POINTS:  1
DIFFICULTY:  Easy
QUESTION TYPE:  Multi-Mode (Multiple choice)
HAS VARIABLES:  False
LEARNING OBJECTIVES:  13.65 – Identify a discrete random variable
NOTES:  Concept
DATE CREATED:  11/4/2013 1:58 AM
DATE MODIFIED:  11/5/2013 3:46 AM

 

2. Give an example of a continuous random variable.
a. The number of fish caught by a fishing boat
b. The number of coins contained in a slot machine
c. The number of traffic accidents in a city
d. The number of gallons of water in a reservoir
e. The number of tables sold at a furniture store
ANSWER:  d
POINTS:  1
DIFFICULTY:  Easy
QUESTION TYPE:  Multi-Mode (Multiple choice)
HAS VARIABLES:  False
LEARNING OBJECTIVES:  13.66 – Identify a continuous random variable
NOTES:  Concept
DATE CREATED:  11/4/2013 1:58 AM
DATE MODIFIED:  3/28/2014 3:09 AM

 

3. Assume that the table below shows the age distribution of nurses in Great Britain in 1851. Make a histogram for the probability distribution.

Age range (yr) 20–29 30–39 40–49 50–59 60–69 70–79 80+
Midpoint (x) 24.5 34.5 44.5 54.5 64.5 75.5 84.5
Percent of nurses 9.8% 5.6% 19.4% 24.9% 29.3% 9.3% 1.7%
a.
b.
c.
d.
e.
ANSWER:  c
POINTS:  1
DIFFICULTY:  Medium
QUESTION TYPE:  Multi-Mode (Multiple choice)
HAS VARIABLES:  True
LEARNING OBJECTIVES:  13.67 – Identify the correct histogram given the data
NOTES:  Application
DATE CREATED:  11/4/2013 1:58 AM
DATE MODIFIED:  3/28/2014 3:16 AM

 

4. What was the age distribution of nurses in Great Britain at the time of Florence Nightingale? Thanks to Florence Nightingale and the British census of 1851, we have the following information (based on data from classic text Notes on Nursing, by Florence Nightingale). Note: In 1851 there were 25,466 nurses in Great Britain. Furthermore, Nightingale made a strict distinction between nurses and domestic servants. Find the probability that a British nurse selected at random in 1851 would be 70 years of age or older. Round your answer to nearest thousandth.

Age range (yr) 20–29 30–39 40–49 50–59 60–69 70–79 80+
Midpoint (x) 24.5 34.5 44.5 54.5 64.5 75.5 84.5
Percent of nurses 5.7% 9.7% 19.5% 29.2% 25.0% 9.1% 1.8%
a. 0.091
b. 0
c. 0.109
d. 0.099
e. 0.105
ANSWER:  c
POINTS:  1
DIFFICULTY:  Medium
QUESTION TYPE:  Multi-Mode (Multiple choice)
HAS VARIABLES:  True
LEARNING OBJECTIVES:  13.68 – Identify the probability for class boundary or higher
NOTES:  Application
DATE CREATED:  11/4/2013 1:58 AM
DATE MODIFIED:  11/5/2013 3:50 AM

 

5. Compute the expected age μ of a British nurse in 1851. Assume that the table below shows the age distribution of nurses in Great Britain in 1851. Round your answer to nearest hundredth.

Age range (yr) 20–29 30–39 40–49 50–59 60–69 70–79 80+
Midpoint (x) 24.5 34.5 44.5 54.5 64.5 75.5 84.5
Percent of nurses 5.7% 9.6% 19.5% 29.1% 24.9% 9.0% 2.2%
a. 54.50
b. 59.50
c. 53.93
d. 53.96
e. 43.96
ANSWER:  d
POINTS:  1
DIFFICULTY:  Medium
QUESTION TYPE:  Multi-Mode (Multiple choice)
HAS VARIABLES:  True
LEARNING OBJECTIVES:  13.69 – Compute the expected age m
NOTES:  Application
DATE CREATED:  11/4/2013 1:58 AM
DATE MODIFIED:  3/13/2014 9:02 AM

 

6. Compute the standard deviation  for ages of British nurses in 1851. Assume that the table below shows the age distribution of nurses in Great Britain in 1851. Round your answer to nearest hundredth.

Age range (yr) 20–29 30–39 40–49 50–59 60–69 70–79 80+
Midpoint (x) 24.5 34.5 44.5 54.5 64.5 75.5 84.5
Percent of nurses 5.8% 9.8% 19.6% 29.1% 24.9% 9.0% 1.8%
a. 13.69
b. 1.53
c. 3.27
d. 53.76
e. 17.25
ANSWER:  a
POINTS:  1
DIFFICULTY:  Difficult
QUESTION TYPE:  Multi-Mode (Multiple choice)
HAS VARIABLES:  True
LEARNING OBJECTIVES:  13.70 – Identify the standard deviation
NOTES:  Application
DATE CREATED:  11/4/2013 1:58 AM
DATE MODIFIED:  3/13/2014 9:12 AM

 

7. The college hiking club is having a fund raiser to buy new equipment for fall and winter outings. The club is selling Chinese fortune cookies at a price of $3 per cookie. Each cookie contains a piece of paper with a different number written on it. A random drawing will determine which number is the winner of a dinner for two at a local Chinese restaurant. The dinner is valued at $35. Since fortune cookies are donated to the club, we can ignore the cost of the cookies. The club sold 717 cookies before the drawing. Lisa bought 31 cookies. What is the probability she will win the dinner for two? Write your answer as a fraction in simplest form, if one exists.
a.
b.
c.
d.
e. none of these choices
ANSWER:  c
POINTS:  1
DIFFICULTY:  Easy
QUESTION TYPE:  Multi-Mode (Multiple choice)
HAS VARIABLES:  True
LEARNING OBJECTIVES:  13.71 – Find the probability
NOTES:  Application
DATE CREATED:  11/4/2013 1:58 AM
DATE MODIFIED:  3/28/2014 4:14 AM

 

8. The college hiking club is having a fund raiser to buy new equipment for fall and winter outings. The club is selling Chinese fortune cookies at a price of $3 per cookie. Each cookie contains a piece of paper with a different number written on it. A random drawing will determine which number is the winner of a dinner for two at a local Chinese restaurant. The dinner is valued at $34. Since fortune cookies are donated to the club, we can ignore the cost of the cookies. The club sold 721 cookies before the drawing. Lisa bought 17 cookies. Lisa’s expected earnings can be found by multiplying the value of the dinner by the probability that she will win. What are Lisa’s expected earnings? Round your answer to the nearest cent.
a. $0.82
b. $2.00
c. $33.20
d. $0.80
e. $34.00
ANSWER:  d
POINTS:  1
DIFFICULTY:  Medium
QUESTION TYPE:  Multi-Mode (Multiple choice)
HAS VARIABLES:  True
LEARNING OBJECTIVES:  13.72 – Find expected values
NOTES:  Application
DATE CREATED:  11/4/2013 1:58 AM
DATE MODIFIED:  11/5/2013 4:04 AM

 

9. The college hiking club is having a fund raiser to buy new equipment for fall and winter outings. The club is selling Chinese fortune cookies at a price of $3 per cookie. Each cookie contains a piece of paper with a different number written on it. A random drawing will determine which number is the winner of a dinner for two at a local Chinese restaurant. The dinner is valued at $39. Since fortune cookies are donated to the club, we can ignore the cost of the cookies. The club sold 720 cookies before the drawing. Lisa bought 32 cookies. What is the probability she will not win the dinner for two? Write your answer as a fraction in simplest form, if one exists.
a.
b.
c.
d.
e. none of these choices
ANSWER:  b
POINTS:  1
DIFFICULTY:  Easy
QUESTION TYPE:  Multi-Mode (Multiple choice)
HAS VARIABLES:  True
LEARNING OBJECTIVES:  13.71 – Find the probability
NOTES:  Application
DATE CREATED:  11/4/2013 1:58 AM
DATE MODIFIED:  3/28/2014 5:24 AM

 

10. The college hiking club is having a fund raiser to buy new equipment for fall and winter outings. The club is selling Chinese fortune cookies at a price of $2 per cookie. Each cookie contains a piece of paper with a different number written on it. A random drawing will determine which number is the winner of a dinner for two at a local Chinese restaurant. The dinner is valued at $37. Since fortune cookies are donated to the club, we can ignore the cost of the cookies. The club sold 718 cookies before the drawing. Lisa bought 27 cookies. Lisa’s expected earnings can be found by multiplying the value of the dinner by the probability that she will win. How much did she effectively contribute to the hiking club?
a. $23.55
b. $49.41
c. $52.61
d. $25.63
e. $25.61
ANSWER:  c
POINTS:  1
DIFFICULTY:  Medium
QUESTION TYPE:  Multi-Mode (Multiple choice)
HAS VARIABLES:  True
LEARNING OBJECTIVES:  13.73 – Find out the effective contribution
NOTES:  Application
DATE CREATED:  11/4/2013 1:58 AM
DATE MODIFIED:  11/5/2013 4:10 AM

 

11. Jim has a 5-year-old car in reasonably good condition. He wants to take out a $50,000 term (that is, accident benefit) car insurance policy until the car is 10 years old. Assume that the probability of a car having an accident in the year in which it is x years old is as follows:

x = age 5 6 7 8 9
P(accident) 0.01182 0.01282 0.01386 0.01513 0.01602
Jim is applying to a car insurance company for his car insurance policy. Using the probabilities that the car will have an accident in its 5th, 6th, 7th, 8th, or 9th year, and the $50,000 accident benefit, what is the expected loss to Car Insurance Company for the respective years? Round your answers to the nearest dollar.
a. $591, $641, $693, $757, $801
b. $581, $641, $693, $747, $801
c. $591, $646, $693, $747, $801
d. $581, $646, $693, $757, $801
e. $591, $641, $693, $747, $801
ANSWER:  a
POINTS:  1
DIFFICULTY:  Easy
QUESTION TYPE:  Multi-Mode (Multiple choice)
HAS VARIABLES:  True
LEARNING OBJECTIVES:  13.74 – Note the expected loss
NOTES:  Application
DATE CREATED:  11/4/2013 1:58 AM
DATE MODIFIED:  11/5/2013 4:36 AM

 

12. Jim has a 5-year-old car in reasonably good condition. He wants to take out a $20,000 term (that is, accident benefit) car insurance policy until the car is 10 years old. Assume that the probability of a car having an accident in the year in which it is x years old is as follows:

x = age 5 6 7 8 9
P(accident) 0.01182 0.01282 0.01386 0.01602 0.01513
Jim is applying to a car insurance company for his term insurance policy. What would be the total expected loss to the insurance company over the years 5 through 9? Round your answer to the nearest dollar.
a. $1390
b. $1383
c. $1388
d. $1393
e. $1386
ANSWER:  d
POINTS:  1
DIFFICULTY:  Medium
QUESTION TYPE:  Multi-Mode (Multiple choice)
HAS VARIABLES:  True
LEARNING OBJECTIVES:  13.75 – What would be the total expected loss
NOTES:  Application
DATE CREATED:  11/4/2013 1:58 AM
DATE MODIFIED:  11/5/2013 4:38 AM

 

13. Jim has a 5-year-old car in reasonably good condition. He wants to take out a $20,000 term (that is, accident benefit) car insurance policy until the car is 10 years old. Assume that the probability of a car having an accident in the year in which it is x years old is as follows:

x = age 5 6 7 8 9
P(accident) 0.01191 0.01292 0.01396 0.01503 0.01613
Jim is applying to a car insurance company for his car insurance policy. If the car insurance company wants to make a profit of $900 above the expected total losses, how much should it charge for the policy? Round your answer to the nearest dollar.
a. $2297
b. $2299
c. $2301
d. $2294
e. $2292
ANSWER:  b
POINTS:  1
DIFFICULTY:  Medium
QUESTION TYPE:  Multi-Mode (Multiple choice)
HAS VARIABLES:  True
LEARNING OBJECTIVES:  13.76 – What would be the charge
NOTES:  Application
DATE CREATED:  11/4/2013 1:58 AM
DATE MODIFIED:  11/5/2013 4:41 AM

 

14. Jim has a 5-year-old car in reasonably good condition. He wants to take out a $20,000 term (that is, accident benefit) car insurance policy until the car is 10 years old. Assume that the probability of a car having an accident in the year in which it is x years old is as follows:

x = age 5 6 7 8 9
P(accident) 0.01182 0.01282 0.01386 0.01513 0.01602
Jim is applying to a car insurance company for his car insurance policy. If the car insurance company charges $7000 for the policy, how much profit does the company expect to make? Round your answer to the nearest dollar.
a. $5604
b. $5609
c. $5602
d. $5611
e. $5607
ANSWER:  e
POINTS:  1
DIFFICULTY:  Medium
QUESTION TYPE:  Multi-Mode (Multiple choice)
HAS VARIABLES:  True
LEARNING OBJECTIVES:  13.77 – Note the expected profit
NOTES:  Application
DATE CREATED:  11/4/2013 1:58 AM
DATE MODIFIED:  11/5/2013 4:43 AM

 

15. Jim has a 5-year-old car in reasonably good condition. He wants to take out a $30,000 term (that is, accident benefit) car insurance policy until the car is 10 years old. Assume that the probability of a car having an accident in the year in which it is x years old is as follows:

x = age 5 6 7 8 9
P(accident) 0.01191 0.01292 0.01396 0.01503 0.01613
Jim is applying to a car insurance company for his car insurance policy. The expected loss to the car insurance company for the 5th, 6th, 7th, 8th, and 9th years would be $357.30, $387.60, $418.80, $450.90 or $483.90 respectively. What would be the total expected loss to the car insurance company over the years 5 through 9? Round your answer to the nearest dollar.
a. $2097
b. $2098
c. $2099
d. $2100
e. $2096
ANSWER:  c
POINTS:  1
DIFFICULTY:  Easy
QUESTION TYPE:  Multi-Mode (Multiple choice)
HAS VARIABLES:  True
LEARNING OBJECTIVES:  13.75 – What would be the total expected loss
NOTES:  Application
DATE CREATED:  11/4/2013 1:58 AM
DATE MODIFIED:  11/5/2013 4:45 AM

 

16. Jim has a 5-year-old car in reasonably good condition. He wants to take out a $20,000 term (that is, accident benefit) car insurance policy until the car is 10 years old. Assume that the probability of a car having an accident in the year in which it is x years old is as follows:

x = age 5 6 7 8 9
P(accident) 0.01182 0.01282 0.01386 0.01513 0.01602
Jim is applying to a car insurance company for his car insurance policy. If the car insurance company wants to make a profit of $700 above the expected total losses of $1393, how much should it charge for the policy?
a. $701
b. $693
c. $713
d. $703
e. $705
ANSWER:  d
POINTS:  1
DIFFICULTY:  Easy
QUESTION TYPE:  Multi-Mode (Multiple choice)
HAS VARIABLES:  True
LEARNING OBJECTIVES:  13.76 – What would be the charge
NOTES:  Application
DATE CREATED:  11/4/2013 1:58 AM
DATE MODIFIED:  3/13/2014 8:54 AM

 

17. Jim has a 5-year-old car in reasonably good condition. He wants to take out a $60,000 term (that is, accident benefit) car insurance policy until the car is 10 years old. Assume that the probability of a car having an accident in the year in which it is x years old is as follows:

x = age 5 6 7 8 9
P(accident) 0.01191 0.01292 0.01396 0.01503 0.01613
Jim is applying to a car insurance company for his car insurance policy. If the car insurance company charges $6000 for the policy and the expected total loss is $4197, how much profit does the company expect to make? Round your answer to the nearest dollar.
a. $1803
b. $1806
c. $1801
d. $1798
e. $1804
ANSWER:  a
POINTS:  1
DIFFICULTY:  Easy
QUESTION TYPE:  Multi-Mode (Multiple choice)
HAS VARIABLES:  True
LEARNING OBJECTIVES:  13.77 – Note the expected profit
NOTES:  Application
DATE CREATED:  11/4/2013 1:58 AM
DATE MODIFIED:  3/13/2014 9:18 AM

 

18. A computer repair shop has two work centers. The first center examines the computer to see what is wrong and the second center repairs the computer. Let  x1 and  x2 be random variables representing the lengths of time in minutes to examine a computer (x1) and to repair a computer (x2). Assume x1 and x2 are independent random variables. Long-term history has shown the following mean and standard deviation for the two work centers:

Examine computer, x1 : µ1 = 28.1 minutes; σ1 = 7.5 minutes
Repair computer, x2 : µ2 = 90.7 minutes; σ2 = 15.3 minutes
Let W=x1+x2 be a random variable representing the total time to examine and repair the computer. Compute the mean and standard deviation of W. Round your answer to the nearest tenth.
a.
b.
c.
d.
e.
ANSWER:  b
POINTS:  1
DIFFICULTY:  Medium
QUESTION TYPE:  Multi-Mode (Multiple choice)
HAS VARIABLES:  True
LEARNING OBJECTIVES:  13.78 – Compute mean and standard deviation
NOTES:  Application
DATE CREATED:  11/4/2013 1:58 AM
DATE MODIFIED:  3/28/2014 6:26 AM

 

19. A computer repair shop has two work centers. The first center examines the computer to see what is wrong and the second center repairs the computer. Let  and  be random variables representing the lengths of time in minutes to examine a computer ( ) and to repair a computer ( ). Assume  and  are independent random variables. Long-term history has shown the following mean and standard deviation for the two work centers:

Examine computer, : = 27.3 minutes; = 7.5 minutes
Repair computer, : = 90.1 minutes; = 15.3 minutes
Let  be a random variable representing the total time to examine and repair the computer. Suppose it costs $1.80 per minute to examine the computer and $2.83 per minute to repair the computer. Then  is a random variable representing the service charges (without parts). Compute the mean and standard deviation of V. Round your answer to the nearest tenth.
a.
b.
c.
d.
e.
ANSWER:  c
POINTS:  1
DIFFICULTY:  Medium
QUESTION TYPE:  Multi-Mode (Multiple choice)
HAS VARIABLES:  True
LEARNING OBJECTIVES:  13.78 – Compute mean and standard deviation
NOTES:  Application
DATE CREATED:  11/4/2013 1:58 AM
DATE MODIFIED:  11/6/2013 12:51 AM

 

20. A computer repair shop has two work centers. The first center examines the computer to see what is wrong and the second center repairs the computer. Let x1 and x2 be random variables representing the lengths of time in minutes to examine a computer (x1) and to repair a computer (x2). Assume x1 and x2 are independent random variables. Long-term history has shown the following mean and standard deviation for the two work centers:

Examine computer, x1 : µ1 = 27.2 minutes; σ1 = 7.6 minutes
Repair computer, x2 : µ2 = 90.6 minutes; σ2 = 15.5 minutes
Let W=x1 +x2 be a random variable representing the total time to examine and repair the computer. There is a flat rate of $1.80 per minute to examine the computer, and if no repairs are ordered, there is an additional $70 service charge. Let  . Compute the mean and standard deviation of L.
a.
b.
c.
d.
e.
ANSWER:  b
POINTS:  1
DIFFICULTY:  Medium
QUESTION TYPE:  Multi-Mode (Multiple choice)
HAS VARIABLES:  True
LEARNING OBJECTIVES:  13.78 – Compute mean and standard deviation
NOTES:  Application
DATE CREATED:  11/4/2013 1:58 AM
DATE MODIFIED:  3/28/2014 6:35 AM

 

21. Richard has been given a 9-question multiple-choice quiz in his history class. Each question has three answers, of which only one is correct. Since Richard has not attended the class recently, he doesn’t know any of the answers. What is the value of p? (p is the value of success) Round your answer to the nearest tenth.
a. 9.0
b. 27.0
c. 3.0
d. 0.3
e. 2.7
ANSWER:  d
POINTS:  1
DIFFICULTY:  Easy
QUESTION TYPE:  Multi-Mode (Multiple choice)
HAS VARIABLES:  True
LEARNING OBJECTIVES:  13.79 – Note the value of success
NOTES:  Application
DATE CREATED:  11/4/2013 1:58 AM
DATE MODIFIED:  3/28/2014 6:59 AM

 

22. Richard has been given a 12-question multiple-choice quiz in his history class. Each question has five answers, of which only one is correct. Since Richard has not attended the class recently, he doesn’t know any of the answers. What is the value of n ?(n is the number of trials)
a. 0.4
b. 12.0
c. 4.8
d. 60.0
e. 2.4
ANSWER:  b
POINTS:  1
DIFFICULTY:  Easy
QUESTION TYPE:  Multi-Mode (Multiple choice)
HAS VARIABLES:  True
LEARNING OBJECTIVES:  13.80 – Find the number of trials
NOTES:  Application
DATE CREATED:  11/4/2013 1:58 AM
DATE MODIFIED:  3/28/2014 6:58 AM

 

23. Richard has been given a 10-question multiple-choice quiz in his history class. Each question has five answers, of which only one is correct. Since Richard has not attended the class recently, he doesn’t know any of the answers. What is considered the success?
a. number of questions
b. Richard answers a question correctly.
c. number of questions answered
d. Richard is unable to answer a question correctly.
e. none of the choices
ANSWER:  b
POINTS:  1
DIFFICULTY:  Easy
QUESTION TYPE:  Multiple Choice
HAS VARIABLES:  True
LEARNING OBJECTIVES:  13.81 – Note the success
NOTES:  Application
DATE CREATED:  11/4/2013 1:58 AM
DATE MODIFIED:  11/6/2013 2:22 AM

 

24. Richard has been given a 9-question multiple-choice quiz in his history class. Each question has four answers, of which only one is correct. Since Richard has not attended the class recently, he doesn’t know any of the answers. Assuming that Richard guesses on all 9 questions, find the probability that he will answer all questions correctly. Round your answer to the nearest thousandth.
a. 0.000
b. 0.250
c. 0.500
d. 0.028
e. 0.444
ANSWER:  a
POINTS:  1
DIFFICULTY:  Medium
QUESTION TYPE:  Multi-Mode (Multiple choice)
HAS VARIABLES:  True
LEARNING OBJECTIVES:  13.71 – Find the probability
NOTES:  Application
DATE CREATED:  11/4/2013 1:58 AM
DATE MODIFIED:  11/6/2013 2:24 AM

 

25. Richard has been given a 7-question multiple-choice quiz in his history class. Each question has five answers, of which only one is correct. Since Richard has not attended the class recently, he doesn’t know any of the answers. Assuming that Richard guesses on all 7 questions, find the probability that he will answer all questions incorrectly. Round your answer to the nearest thousandth.
a. 0.800
b. 0.500
c. 0.463
d. 0.210
e. 0.857
ANSWER:  d
POINTS:  1
DIFFICULTY:  Medium
QUESTION TYPE:  Multi-Mode (Multiple choice)
HAS VARIABLES:  True
LEARNING OBJECTIVES:  13.71 – Find the probability
NOTES:  Application
DATE CREATED:  11/4/2013 1:58 AM
DATE MODIFIED:  11/6/2013 2:25 AM

 

26. Richard has been given an 11-question multiple-choice quiz in his history class. Each question has five answers, of which only one is correct. Since Richard has not attended the class recently, he doesn’t know any of the answers. Assuming that Richard guesses on all 11 questions, find the probability that he will answer at least 4 questions correctly. Round your answer to the nearest thousandth.
a. 0.111
b. 0.161
c. 0.364
d. 0.073
e. 0.5
ANSWER:  b
POINTS:  1
DIFFICULTY:  Difficult
QUESTION TYPE:  Multi-Mode (Multiple choice)
HAS VARIABLES:  True
LEARNING OBJECTIVES:  13.82 – To identify the probability with the given condition
NOTES:  Application
DATE CREATED:  11/4/2013 1:58 AM
DATE MODIFIED:  3/28/2014 7:08 AM

 

27. Richard has been given a 12-question multiple-choice quiz in his history class. Each question has four answers, of which only one is correct. Since Richard has not attended the class recently, he doesn’t know any of the answers. The success occurs if Richard answers a question correctly and the failure occurs if Richard is unable to answer a question correctly. Assuming that Richard guesses on all 12 questions, find the probability that he will answer no more than 3 questions correctly. Round your answer to the nearest thousandth.
a. 0.258
b. 0.5
c. 0.25
d. 0.649
e. 0.063
ANSWER:  d
POINTS:  1
DIFFICULTY:  Difficult
QUESTION TYPE:  Multi-Mode (Multiple choice)
HAS VARIABLES:  True
LEARNING OBJECTIVES:  13.82 – To identify the probability with the given condition
NOTES:  Application
DATE CREATED:  11/4/2013 1:58 AM
DATE MODIFIED:  3/28/2014 7:01 AM

 

28. Richard has been given a 6-question multiple-choice quiz in his history class. Each question has three answers, of which only one is correct. Since Richard has not attended the class recently, he doesn’t know any of the answers. The success occurs if Richard answers a question correctly and the failure occurs if Richard is unable to answer a question correctly. Assuming that Richard guesses on all 6 questions, find the probability that he will answer all questions incorrectly. Round your answer to the nearest thousandth.
a. 0.667
b. 0.088
c. 0.579
d. 0.833
e. 0.5
ANSWER:  b
POINTS:  1
DIFFICULTY:  Medium
QUESTION TYPE:  Multi-Mode (Multiple choice)
HAS VARIABLES:  True
LEARNING OBJECTIVES:  13.71 – Find the probability
NOTES:  Application
DATE CREATED:  11/4/2013 1:58 AM
DATE MODIFIED:  11/6/2013 2:29 AM

 

29. Richard has been given an 11-question multiple-choice quiz in his history class. Each question has four answers, of which only one is correct. Since Richard has not attended the class recently, he doesn’t know any of the answers. The success occurs if Richard answers a question correctly and the failure occurs if Richard is unable to answer a question correctly. Assuming that Richard guesses on all 11 questions, find the probability that he will answer at least 3 questions correctly. Round your answer to the nearest thousandth.
a. 0.258
b. 0.500
c. 0.273
d. 0.068
e. 0.545
ANSWER:  e
POINTS:  1
DIFFICULTY:  Difficult
QUESTION TYPE:  Multi-Mode (Multiple choice)
HAS VARIABLES:  True
LEARNING OBJECTIVES:  13.82 – To identify the probability with the given condition
NOTES:  Application
DATE CREATED:  11/4/2013 1:58 AM
DATE MODIFIED:  3/28/2014 6:53 AM

 

30. Richard has been given a 7-question multiple-choice quiz in his history class. Each question has three answers, of which only one is correct. Since Richard has not attended the class recently, he doesn’t know any of the answers. Assuming that Richard guesses on all 7 questions, find the probability that he will answer no more than 4 questions correctly. Round your answer to the nearest thousandth.
a. 0.128
b. 0.571
c. 0.955
d. 0.19
e. 0.5
ANSWER:  c
POINTS:  1
DIFFICULTY:  Medium
QUESTION TYPE:  Multi-Mode (Multiple choice)
HAS VARIABLES:  True
LEARNING OBJECTIVES:  13.82 – To identify the probability with the given condition
NOTES:  Application
DATE CREATED:  11/4/2013 1:58 AM
DATE MODIFIED:  3/28/2014 6:48 AM

 

31. Richard has been given a 4-question multiple-choice quiz in his history class. Each question has three answers, of which only one is correct. Since Richard has not attended the class recently, he doesn’t know any of the answers. The success occurs if Richard answers a question correctly and the failure occurs if Richard is unable to answer a question correctly. Assuming that Richard guesses on all 4 questions, find the probability that he will answer all questions correctly. Round your answer to the nearest thousandth.
a. 0.012
b. 0.333
c. 0.5
d. 0.083
e. 0.75
ANSWER:  a
POINTS:  1
DIFFICULTY:  Medium
QUESTION TYPE:  Multi-Mode (Multiple choice)
HAS VARIABLES:  True
LEARNING OBJECTIVES:  13.71 – Find the probability
NOTES:  Application
DATE CREATED:  11/4/2013 1:58 AM
DATE MODIFIED:  3/28/2014 6:42 AM

 

32. There are 5 radar stations and the probability of a single radar station detecting an enemy plane is 0.75. What is the probability of 3 stations detecting an enemy plane? Round your answer to nearest hundredth.
a. 0.06
b. 0.75
c. 0.07
d. 0.26
e. 0.03
ANSWER:  d
POINTS:  1
DIFFICULTY:  Medium
QUESTION TYPE:  Multi-Mode (Multiple choice)
HAS VARIABLES:  True
LEARNING OBJECTIVES:  13.82 – To identify the probability with the given condition
NOTES:  Application
DATE CREATED:  11/4/2013 1:58 AM
DATE MODIFIED:  11/6/2013 2:39 AM

 

33. There are 6 radar stations and the probability of a single radar station detecting an enemy plane is 0.55 and the probability of not detecting an enemy plane is 0.45. What is the probability that the number of stations that detect a plane is no more than 4? Round your answer to nearest hundredth.
a. 0.84
b. 0.28
c. 0.55
d. 0.06
e. 0.02
ANSWER:  a
POINTS:  1
DIFFICULTY:  Medium
QUESTION TYPE:  Multi-Mode (Multiple choice)
HAS VARIABLES:  True
LEARNING OBJECTIVES:  13.82 – To identify the probability with the given condition
NOTES:  Application
DATE CREATED:  11/4/2013 1:58 AM
DATE MODIFIED:  3/28/2014 6:17 AM

 

34. There are 6 radar stations and the probability of a single radar station detecting an enemy plane is 0.35. Identify the type of histogram for the probability distribution.

a. skewed left
b. symmetric
c. uniform or rectangular
d. none of these choices
e. skewed right
ANSWER:  e
POINTS:  1
DIFFICULTY:  Easy
QUESTION TYPE:  Multiple Choice
HAS VARIABLES:  True
LEARNING OBJECTIVES:  13.83 – Identify the type of a histogram from the graph of the probability distribution when the graph is provided
NOTES:  Application
DATE CREATED:  11/4/2013 1:58 AM
DATE MODIFIED:  3/13/2014 10:15 AM

 

35. There are 6 radar stations and the probability of a single radar station detecting an enemy plane is 0.50. Identify the type of histogram for the probability distribution.
a. skewed right
b. skewed left
c. none of these choices
d. uniform or rectangular
e. symmetric
ANSWER:  e
POINTS:  1
DIFFICULTY:  Medium
QUESTION TYPE:  Multiple Choice
HAS VARIABLES:  True
LEARNING OBJECTIVES:  13.84 – Identify the type of a histogram of probability distribution when values of n and r are given
NOTES:  Application
DATE CREATED:  11/4/2013 1:58 AM
DATE MODIFIED:  3/28/2014 6:09 AM

 

36. There are 4 radar stations and the probability of a single radar station detecting an enemy plane is 0.55. Make a histogram for the probability distribution.
a.
b.
c.
d.
e.
ANSWER:  c
POINTS:  1
DIFFICULTY:  Medium
QUESTION TYPE:  Multi-Mode (Multiple choice)
HAS VARIABLES:  True
LEARNING OBJECTIVES:  13.85 – Make a histogram for the probability distribution
NOTES:  Application
DATE CREATED:  11/4/2013 1:58 AM
DATE MODIFIED:  3/13/2014 10:16 AM

 

37. There are 4 radar stations and the probability of a single radar station detecting an enemy plane is 0.55. Make a histogram for the probability distribution.

r
0 0.041
1 0.200
2 0.368
3 0.300
4 0.092
a. b.
c. d.
e.
ANSWER:  d
POINTS:  1
DIFFICULTY:  Medium
QUESTION TYPE:  Multi-Mode (Multiple choice)
HAS VARIABLES:  True
LEARNING OBJECTIVES:  13.85 – Make a histogram for the probability distribution
NOTES:  Application
DATE CREATED:  11/4/2013 1:58 AM
DATE MODIFIED:  3/28/2014 6:06 AM

 

38. The probability of a radar station detecting an enemy plane is 0.55. If 60 stations are in use, what is the expected number of stations that will detect an enemy plane?
a. 60
b. 33
c. 0
d. 58
e. none of these choices
ANSWER:  b
POINTS:  1
DIFFICULTY:  Medium
QUESTION TYPE:  Multi-Mode (Multiple choice)
HAS VARIABLES:  True
LEARNING OBJECTIVES:  13.86 – To identify the expected number of stations detecting a plane
NOTES:  Application
DATE CREATED:  11/4/2013 1:58 AM
DATE MODIFIED:  11/6/2013 2:58 AM

 

39. The probability of a radar station detecting an enemy plane is 0.65 and the probability of not detecting an enemy plane is 0.35. If 100 stations are in use, what is the expected number of stations that will detect an enemy plane?
a. 100
b. 0
c. 98
d. 65
e. none of these choices
ANSWER:  d
POINTS:  1
DIFFICULTY:  Medium
QUESTION TYPE:  Multi-Mode (Multiple choice)
HAS VARIABLES:  True
LEARNING OBJECTIVES:  13.86 – To identify the expected number of stations detecting a plane
NOTES:  Application
DATE CREATED:  11/4/2013 1:58 AM
DATE MODIFIED:  3/28/2014 5:47 AM

 

40. The probability of a single radar station detecting an enemy plane is 0.6. How many such stations are required to be 97% certain that an enemy plane flying over will be detected by at least one station?
a. 3
b. 5
c. 2
d. 4
e. none of these choices
ANSWER:  d
POINTS:  1
DIFFICULTY:  Medium
QUESTION TYPE:  Multi-Mode (Multiple choice)
HAS VARIABLES:  True
LEARNING OBJECTIVES:  13.87 – To identify the number of stations required to achieve the given percent of certainty
NOTES:  Application
DATE CREATED:  11/4/2013 1:58 AM
DATE MODIFIED:  3/28/2014 5:43 AM

 

41. The probability of a radar station detecting an enemy plane is 0.85. If 4 stations are in use, what is the standard deviation? Round your answer to nearest hundredth.
a. 1.84
b. 0.71
c. 0.51
d. 3.40
e. none of these choices
ANSWER:  b
POINTS:  1
DIFFICULTY:  Medium
QUESTION TYPE:  Multi-Mode (Multiple choice)
HAS VARIABLES:  True
LEARNING OBJECTIVES:  13.86 – To identify the expected number of stations detecting a plane
NOTES:  Application
DATE CREATED:  11/4/2013 1:58 AM
DATE MODIFIED:  3/28/2014 5:39 AM

 

42. The probability of a radar station detecting an enemy plane is 0.85 and the probability of not detecting an enemy plane is 0.15. If 4 stations are in use, what is the standard deviation? Round your answer to nearest hundredth.
a. 1.84
b. 0.71
c. 0.51
d. 3.4
e. none of these choices
ANSWER:  b
POINTS:  1
DIFFICULTY:  Medium
QUESTION TYPE:  Multi-Mode (Multiple choice)
HAS VARIABLES:  True
LEARNING OBJECTIVES:  13.86 – To identify the expected number of stations detecting a plane
NOTES:  Application
DATE CREATED:  11/4/2013 1:58 AM
DATE MODIFIED:  11/6/2013 3:03 AM

 

43. The probability of a single radar station detecting an enemy plane is 0.75 and the probability of not detecting an enemy plane is 0.25. How many such stations are required to be 98% certain that an enemy plane flying over will be detected by at least one station?
a. 3
b. 2
c. 4
d. 1
e. none of these choices
ANSWER:  a
POINTS:  1
DIFFICULTY:  Medium
QUESTION TYPE:  Multi-Mode (Multiple choice)
HAS VARIABLES:  True
LEARNING OBJECTIVES:  13.87 – To identify the number of stations required to achieve the given percent of certainty
NOTES:  Application
DATE CREATED:  11/4/2013 1:58 AM
DATE MODIFIED:  11/6/2013 3:04 AM

 

44. Suppose that on the leeward side of the island of Oahu, in the small village of Nanakuli, about 70% of the residents are of Hawaiian ancestry. Let n = 1, 2, 3,… represent the number of people you must meet until you encounter the first person of Hawaiian ancestry in the village of Nanakuli. The formula for the probability distribution of the random variable n is given as  . Compute the probability for n = 1. Round your answer to the nearest ten thousandth.
a. 0.71
b. 0.7
c. 0.3
d. 0.31
e. 0.716
ANSWER:  b
POINTS:  1
DIFFICULTY:  Easy
QUESTION TYPE:  Multi-Mode (Multiple choice)
HAS VARIABLES:  True
LEARNING OBJECTIVES:  13.71 – Find the probability
NOTES:  Application
DATE CREATED:  11/4/2013 1:58 AM
DATE MODIFIED:  3/28/2014 5:17 AM

 

45. Suppose that on the leeward side of the island of Oahu, in the small village of Nanakuli, about 50% of the residents are of Hawaiian ancestry. Let n = 1, 2, 3,… represent the number of people you must meet until you encounter the first person of Hawaiian ancestry in the village of Nanakuli. Compute the probability for  3. Round your answer to the nearest ten thousandth.
a. 0.24
b. 0.1350
c. 0.1250
d. 0.25
e. 0.251
ANSWER:  d
POINTS:  1
DIFFICULTY:  Medium
QUESTION TYPE:  Multi-Mode (Multiple choice)
HAS VARIABLES:  True
LEARNING OBJECTIVES:  13.71 – Find the probability
NOTES:  Application
DATE CREATED:  11/4/2013 1:58 AM
DATE MODIFIED:  3/28/2014 5:14 AM

 

46. Suppose that on the leeward side of the island of Oahu, in the small village of Nanakuli, about 30% of the residents are of Hawaiian ancestry. Let n = 1, 2, 3,… represent the number of people you must meet until you encounter the first person of Hawaiian ancestry in the village of Nanakuli. What is the expected number of people you must meet until you encounter the first person of Hawaiian ancestry in the village of Nanakuli? Round your answer to the nearest hundredth.
a. 1.43
b. 3.44
c. 33.33
d. 33.55
e. 3.33
ANSWER:  e
POINTS:  1
DIFFICULTY:  Medium
QUESTION TYPE:  Multi-Mode (Multiple choice)
HAS VARIABLES:  True
LEARNING OBJECTIVES:  13.88 – Note the expected number
NOTES:  Application
DATE CREATED:  11/4/2013 1:58 AM
DATE MODIFIED:  3/28/2014 5:06 AM

 

47. Suppose that on the leeward side of the island of Oahu, in the small village of Nanakuli, about 90% of the residents are of Hawaiian ancestry. Let n=1, 2, 3,… represent the number of people you must meet until you encounter the first person of Hawaiian ancestry in the village of Nanakuli. Write the expression for the probability distribution of the random variable n.
a.
b.
c.
d.
e.
ANSWER:  d
POINTS:  1
DIFFICULTY:  Medium
QUESTION TYPE:  Multi-Mode (Multiple choice)
HAS VARIABLES:  True
LEARNING OBJECTIVES:  13.89 – Note the expression for P(n)
NOTES:  Application
DATE CREATED:  11/4/2013 1:58 AM
DATE MODIFIED:  3/28/2014 5:03 AM

 

48. Suppose that on the leeward side of the island of Oahu, in the small village of Nanakuli, about 80% of the residents are of Hawaiian ancestry. Let n= 1, 2, 3,… represent the number of people you must meet until you encounter the first person of Hawaiian ancestry in the village of Nanakuli. Compute the probability for n= 4. Round your answer to the nearest ten thousandth.
a. 0.0164
b. 0.0064
c. 0.1024
d. 0.016
e. 0.637
ANSWER:  b
POINTS:  1
DIFFICULTY:  Medium
QUESTION TYPE:  Multi-Mode (Multiple choice)
HAS VARIABLES:  True
LEARNING OBJECTIVES:  13.71 – Find the probability
NOTES:  Application
DATE CREATED:  11/4/2013 1:58 AM
DATE MODIFIED:  3/28/2014 4:57 AM

 

49. Suppose that on the leeward side of the island of Oahu, in the small village of Nanakuli, about 60% of the residents are of Hawaiian ancestry. Let n= 1, 2, 3,… represent the number of people you must meet until you encounter the first person of Hawaiian ancestry in the village of Nanakuli. The formula for the probability distribution of the random variable n is given as  . Compute the probability for   3. Round your answer to the nearest ten thousandth.
a. 0.16
b. 0.226
c. 0.216
d. 0.15
e. 0.622
ANSWER:  a
POINTS:  1
DIFFICULTY:  Medium
QUESTION TYPE:  Multi-Mode (Multiple choice)
HAS VARIABLES:  True
LEARNING OBJECTIVES:  13.71 – Find the probability
NOTES:  Application
DATE CREATED:  11/4/2013 1:58 AM
DATE MODIFIED:  3/28/2014 4:45 AM

 

50. Suppose that on the leeward side of the island of Oahu, in the small village of Nanakuli, about 40% of the residents are of Hawaiian ancestry. Let  1, 2, 3,… represent the number of people you must meet until you encounter the first person of Hawaiian ancestry in the village of Nanakuli. The formula for the probability distribution of the random variable n is given as  . What is the expected number of people you must meet until you encounter the first person of Hawaiian ancestry in the village of Nanakuli? Round your answer to the nearest hundredth.
a. 1.67
b. 2.61
c. 2.50
d. 25.22
e. 25.00
ANSWER:  c
POINTS:  1
DIFFICULTY:  Medium
QUESTION TYPE:  Multi-Mode (Multiple choice)
HAS VARIABLES:  True
LEARNING OBJECTIVES:  13.88 – Note the expected number
NOTES:  Application
DATE CREATED:  11/4/2013 1:58 AM
DATE MODIFIED:  11/6/2013 3:44 AM

 

51. In one of the archaeological excavation sites, the artifact density (number of prehistoric artifacts per 10 liters of sediment) was 2.0. Suppose you are going to dig up and examine 40 liters of sediment at this site. Let r = 0, 1, 2, 3,… be a random variable that represents the number of prehistoric artifacts found in your 40 liters of sediment. Identify λ. Round your answer to the nearest tenth.
a. 80
b. 8
c. 0.8
d. 200
e. 9
ANSWER:  b
POINTS:  1
DIFFICULTY:  Easy
QUESTION TYPE:  Multi-Mode (Multiple choice)
HAS VARIABLES:  True
LEARNING OBJECTIVES:  13.90 – Identify the mean number of success over designated interval
NOTES:  Application
DATE CREATED:  11/4/2013 1:58 AM
DATE MODIFIED:  3/28/2014 4:17 AM

 

52. In one of the archaeological excavation sites, the artifact density (number of prehistoric artifacts per 10 liters of sediment) was  . Suppose you are going to dig up and examine   liters of sediment at this site. Let   0, 1, 2, 3,… be a random variable that represents the number of prehistoric artifacts found in your   liters of sediment. Compute the probability that in your   liters of sediment you will find   prehistoric  . Round your answer to the nearest ten thousandth.
a.
b.
c.
d.
e.
ANSWER:  e
POINTS:  1
DIFFICULTY:  Medium
REFERENCES:  Bra_US_9e
QUESTION TYPE:  Multiple Choice
HAS VARIABLES:  True
LEARNING OBJECTIVES:  13.71 – Find the probability
TOPICS:  5.4
KEYWORDS:  14
NOTES:  Application
DATE CREATED:  3/13/2014 1:45 PM
DATE MODIFIED:  3/13/2014 2:18 PM

 

53. In one of the archaeological excavation sites, the artifact density (number of prehistoric artifacts per 10 liters of sediment) was  . Suppose you are going to dig up and examine   liters of sediment at this site. Let   0, 1, 2, 3,… be a random variable that represents the number of prehistoric artifacts found in your   liters of sediment. Find the probability that you will find   or more artifacts in the   liters of sediment. Round your answer to the nearest ten thousandth.
a.
b.
c.
d.
e.
ANSWER:  d
POINTS:  1
DIFFICULTY:  Medium
REFERENCES:  Bra_US_9e
QUESTION TYPE:  Multiple Choice
HAS VARIABLES:  True
LEARNING OBJECTIVES:  13.71 – Find the probability
TOPICS:  5.4
KEYWORDS:  14
NOTES:  Application
DATE CREATED:  3/13/2014 2:17 PM
DATE MODIFIED:  3/13/2014 2:22 PM

 

54. In one of the archaeological excavation sites, the artifact density (number of prehistoric artifacts per 10 liters of sediment) was  . Suppose you are going to dig up and examine   liters of sediment at this site. Let   0, 1, 2, 3,… be a random variable that represents the number of prehistoric artifacts found in your   liters of sediment. Find the probability that you will find fewer than   prehistoric artifacts in the   liters of sediment. Round your answer to the nearest ten thousandth.
a.
b.
c.
d.
e.
ANSWER:  b
POINTS:  1
DIFFICULTY:  Medium
REFERENCES:  Bra_US_9e
QUESTION TYPE:  Multiple Choice
HAS VARIABLES:  True
LEARNING OBJECTIVES:  13.71 – Find the probability
TOPICS:  5.4
KEYWORDS:  14
NOTES:  Application
DATE CREATED:  3/13/2014 2:23 PM
DATE MODIFIED:  3/13/2014 2:38 PM

 

55. In one of the archaeological excavation sites, the artifact density (number of prehistoric artifacts per 10 liters of sediment) was 2.5. Suppose you are going to dig up and examine 40 liters of sediment at this site. Let  0, 1, 2, 3,… be a random variable that represents the number of prehistoric artifacts found in your 40 liters of sediment. Write the formula for the probability distribution of the random variable r.
a.
b.
c.
d.
e.
ANSWER:  b
POINTS:  1
DIFFICULTY:  Easy
QUESTION TYPE:  Multi-Mode (Multiple choice)
HAS VARIABLES:  True
LEARNING OBJECTIVES:  13.91 – Note the expression for P(r)
NOTES:  Application
DATE CREATED:  11/4/2013 1:59 AM
DATE MODIFIED:  11/6/2013 4:37 AM

 

56. In one of the archaeological excavation sites, the artifact density (number of prehistoric artifacts per 10 liters of sediment) was  . Suppose you are going to dig up and examine   liters of sediment at this site. Let  0, 1, 2, 3,… be a random variable that represents the number of prehistoric artifacts found in your   liters of sediment. The formula for the probability distribution of the random variable r is given as  . Compute the probability that in your   liters of sediment you will find   prehistoric  . Round your answer to the nearest ten thousandth.
a.
b.
c.
d.
e.
ANSWER:  a
POINTS:  1
DIFFICULTY:  Medium
REFERENCES:  Bra_US_9e
QUESTION TYPE:  Multiple Choice
HAS VARIABLES:  True
LEARNING OBJECTIVES:  13.71 – Find the probability
TOPICS:  5.4
KEYWORDS:  15
OTHER:  5.4.15b
NOTES:  Application
DATE CREATED:  3/13/2014 2:49 PM
DATE MODIFIED:  3/14/2014 3:11 AM

 

57. In one of the archaeological excavation sites, the artifact density (number of prehistoric artifacts per 10 liters of sediment) was  . Suppose you are going to dig up and examine   liters of sediment at this site. Let  0, 1, 2, 3,… be a random variable that represents the number of prehistoric artifacts found in your   liters of sediment. The formula for the probability distribution of the random variable r is given as  . Find the probability that you will find   or more artifacts in the   liters of sediment. Round your answer to the nearest ten thousandth.
a.
b.
c.
d.
e.
ANSWER:  e
POINTS:  1
DIFFICULTY:  Medium
REFERENCES:  Bra_US_9e
QUESTION TYPE:  Multiple Choice
HAS VARIABLES:  True
LEARNING OBJECTIVES:  13.71 – Find the probability
TOPICS:  5.4
KEYWORDS:  15
OTHER:  5.4.15c
NOTES:  Application
DATE CREATED:  3/13/2014 3:01 PM
DATE MODIFIED:  3/14/2014 3:12 AM

 

58. In one of the archaeological excavation sites, the artifact density (number of prehistoric artifacts per 10 liters of sediment) was  . Suppose you are going to dig up and examine  liters of sediment at this site. Let  0, 1, 2, 3,… be a random variable that represents the number of prehistoric artifacts found in your   liters of sediment. The formula for the probability distribution of the random variable r is given as  . Find the probability that you will find fewer than   prehistoric artifacts in the   liters of sediment. Round your answer to the nearest ten thousandth.
a.
b.
c.
d.
e.
ANSWER:  d
POINTS:  1
DIFFICULTY:  Medium
REFERENCES:  Bra_US_9e
QUESTION TYPE:  Multiple Choice
HAS VARIABLES:  True
LEARNING OBJECTIVES:  13.71 – Find the probability
TOPICS:  5.4
KEYWORDS:  14
NOTES:  Application
DATE CREATED:  3/13/2014 3:16 PM
DATE MODIFIED:  3/13/2014 3:33 PM

 

59. The Honolulu Advertiser stated that in Honolulu there was an average of 653.0 burglaries per 400000 households in a given year. In the Kohola Drive neighborhood there are 320 homes. Let r be the number of homes that will be burglarized in a year. The formula for the probability distribution of the random variable r is given as  . Compute the probability for  . Round your answer to the nearest ten thousandth.
a.
b.
c.
d.
e.
ANSWER:  a
POINTS:  1
DIFFICULTY:  Medium
REFERENCES:  Bra_US_9e
QUESTION TYPE:  Multiple Choice
HAS VARIABLES:  True
LEARNING OBJECTIVES:  13.71 – Find the probability
TOPICS:  5.4
KEYWORDS:  21
OTHER:  5.4.21b
NOTES:  Application
DATE CREATED:  3/14/2014 3:15 AM
DATE MODIFIED:  3/14/2014 3:22 AM

 

60. The Honolulu Advertiser stated that in Honolulu there was an average of 667 burglaries per 300000 households in a given year. In the Kohola Drive neighborhood there are 313 homes. Let r be the number of homes that will be burglarized in a year. The formula for the probability distribution of the random variable r is given as  . Compute the probability for  . Round your answer to the nearest ten thousandth.
a.
b.
c.
d.
e.
ANSWER:  c
POINTS:  1
DIFFICULTY:  Medium
REFERENCES:  Bra_US_9e
QUESTION TYPE:  Multiple Choice
HAS VARIABLES:  True
LEARNING OBJECTIVES:  13.71 – Find the probability
TOPICS:  5.4
KEYWORDS:  21
OTHER:  5.4.21c
NOTES:  Application
DATE CREATED:  3/14/2014 2:27 AM
DATE MODIFIED:  3/14/2014 2:53 AM

 

61. The Honolulu Advertiser stated that in Honolulu there was an average of 667 burglaries per 200,000 households in a given year. In the Kohola Drive neighborhood there are 320 homes. Let r be the number of homes that will be burglarized in a year. What is the value of n?
a. 667
b. 200,000
c. 320
d. 200,667
e. 200,320
ANSWER:  c
POINTS:  1
DIFFICULTY:  Easy
QUESTION TYPE:  Multi-Mode (Multiple choice)
HAS VARIABLES:  True
LEARNING OBJECTIVES:  13.92 – Note the value of n
NOTES:  Application
DATE CREATED:  11/4/2013 1:59 AM
DATE MODIFIED:  3/28/2014 3:19 AM

 

62. The Honolulu Advertiser stated that in Honolulu there was an average of 659 burglaries per 400,000 households in a given year. In the Kohola Drive neighborhood there are 321 homes. Let r be the number of homes that will be burglarized in a year. What is the value of p to four decimal places?
a. 659
b. 0.0016
c. 321
d. 0.0008
e. 2.0530
ANSWER:  b
POINTS:  1
DIFFICULTY:  Easy
QUESTION TYPE:  Multi-Mode (Multiple choice)
HAS VARIABLES:  True
LEARNING OBJECTIVES:  13.93 – Note the value of p
NOTES:  Application
DATE CREATED:  11/4/2013 1:59 AM
DATE MODIFIED:  3/28/2014 3:17 AM

 

63. The Honolulu Advertiser stated that in Honolulu there was an average of 651 burglaries per 500,000 households in a given year. In the Kohola Drive neighborhood there are 319 homes. Let r be the number of homes that will be burglarized in a year. What is the value of λ to one decimal places ?
a. 0.2
b. 651
c. 319
d. 2.0
e. 0.4
ANSWER:  e
POINTS:  1
DIFFICULTY:  Easy
QUESTION TYPE:  Multi-Mode (Multiple choice)
HAS VARIABLES:  True
LEARNING OBJECTIVES:  13.90 – Identify the mean number of success over designated interval
NOTES:  Application
DATE CREATED:  11/4/2013 1:59 AM
DATE MODIFIED:  3/28/2014 3:13 AM

 

64. The Honolulu Advertiser stated that in Honolulu there was an average of 661 burglaries per 100,000 households in a given year. In the Kohola Drive neighborhood there are 323 homes. Let r be the number of homes that will be burglarized in a year. Compute the probability for  . Round your answer to the nearest ten thousandth.
a. 0.0613
b. 0.3969
c. 0.1743
d. 0.2001
e. 0.1890
ANSWER:  e
POINTS:  1
DIFFICULTY:  Easy
REFERENCES:  Bra_US_9e
QUESTION TYPE:  Multi-Mode (Multiple choice)
HAS VARIABLES:  True
LEARNING OBJECTIVES:  13.71 – Find the probability
TOPICS:  5.4
KEYWORDS:  22
OTHER:  5.4.22b
NOTES:  Application
DATE CREATED:  3/14/2014 3:45 AM
DATE MODIFIED:  3/14/2014 4:17 AM

 

65. The Honolulu Advertiser stated that in Honolulu there was an average of 661 burglaries per 400,000 households in a given year. In the Kohola Drive neighborhood there are 317 homes. Let r be the number of homes that will be burglarized in a year. Compute the probability for  . Round your answer to the nearest ten thousandth.

a. 0.1013
b. 0.0144
c. 0.3010
d. 0.0902
e. 0.0369
ANSWER:  d
POINTS:  1
DIFFICULTY:  Easy
REFERENCES:  Bra_US_9e
QUESTION TYPE:  Multi-Mode (Multiple choice)
HAS VARIABLES:  True
LEARNING OBJECTIVES:  13.71 – Find the probability
TOPICS:  5.4
KEYWORDS:  22
OTHER:  5.4.22c
NOTES:  Application
DATE CREATED:  3/14/2014 4:11 AM
DATE MODIFIED:  3/14/2014 4:21 AM

 

66. The Honolulu Advertiser stated that in Honolulu there was an average of 669 burglaries per 100,000 households in a given year. In the Kohola Drive neighborhood there are 320 homes. Let r be the number of homes that will be burglarized in a year. Compute the probability for  . Round your answer to the nearest ten thousandth.

a. 0.6474
b. 0.8386
c. 0.1736
d. 0.6496
e.
ANSWER:  d
POINTS:  1
DIFFICULTY:  Easy
REFERENCES:  Bra_US_9e
QUESTION TYPE:  Multi-Mode (Multiple choice)
HAS VARIABLES:  True
LEARNING OBJECTIVES:  13.71 – Find the probability
TOPICS:  5.4
KEYWORDS:  22
OTHER:  5.4.22b
NOTES:  Application
DATE CREATED:  3/14/2014 4:11 AM
DATE MODIFIED:  3/28/2014 3:05 AM