STATS:DATA+MODELS(LL)-W/ACCESS>CUSTOM<
21st Edition
ISBN: 9780137643219
Author: DeVeaux
Publisher: PEARSON
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Chapter 14, Problem 26E
a.
To determine
Find the
b.
To determine
Find the expected profit on this policy.
c.
To determine
Find the standard deviation.
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2. The person is male or does not have a college degree. Answer:
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3. The person is female or does not have a college degree.
need help with part b
Chapter 14 Solutions
STATS:DATA+MODELS(LL)-W/ACCESS>CUSTOM<
Ch. 14.1 - 1. One of the authors took his minivan in for...Ch. 14.3 - 2. Suppose the time it takes a customer to get and...Ch. 14 - Prob. 1ECh. 14 - 2. Caffeinated A coffee shop tracks sales and has...Ch. 14 - 3. Oranges again What is the standard deviation...Ch. 14 - 4. Caffeinated again What is the standard...Ch. 14 - 5. Salary An employer pays a mean salary for a...Ch. 14 - 6. Golf scores A golfer keeps track of his score...Ch. 14 - 13. Battery The life span of a calculator battery...Ch. 14 - 14. Ketchup An automatic filling machine in a...
Ch. 14 - 15. Expected value Find the expected value of each...Ch. 14 - 16. Expected value Find the expected value of each...Ch. 14 - 17. Pick a card, any card You draw a card from a...Ch. 14 - 18. You bet! You roll a fair die. If it comes up a...Ch. 14 - 19. Kids A couple plans to have children until...Ch. 14 - 20. Carnival A carnival game offers a $100 cash...Ch. 14 - 21. Software A small software company bids on two...Ch. 14 - Prob. 16ECh. 14 - Prob. 17ECh. 14 - Prob. 18ECh. 14 - Prob. 19ECh. 14 - 26. The die Find the standard deviation of the...Ch. 14 - Prob. 21ECh. 14 - Prob. 22ECh. 14 - Prob. 23ECh. 14 - 30. Red lights A commuter must pass through five...Ch. 14 - 31. Defects A consumer organization inspecting new...Ch. 14 - 32. Insurance An insurance policy costs $100 and...Ch. 14 - Prob. 27ECh. 14 - Day trading An option to buy a stock is priced at...Ch. 14 - Prob. 29ECh. 14 - 36. Contracts Your company bids for two contracts....Ch. 14 - Prob. 31ECh. 14 - Prob. 32ECh. 14 - Prob. 33ECh. 14 - Prob. 34ECh. 14 - Random variables Given independent random...Ch. 14 - 42. Random variables Given independent random...Ch. 14 - Prob. 37ECh. 14 - 44. Garden A company selling vegetable seeds in...Ch. 14 - Prob. 39ECh. 14 - Stop! Find the mean and standard deviation of the...Ch. 14 - Tickets A delivery company’s trucks occasionally...Ch. 14 - Donations Organizers of a televised fundraiser...Ch. 14 - 49. Fire! An insurance company estimates that it...Ch. 14 - Prob. 45ECh. 14 - 52. Pets The American Veterinary Association...Ch. 14 - Prob. 47ECh. 14 - More pets You’re thinking about getting two dogs...Ch. 14 - 55. Medley In the 4 × 100 medley relay event, four...Ch. 14 - Prob. 50ECh. 14 - Prob. 51ECh. 14 - 58. Bike sale The bicycle shop in Exercise 56 will...Ch. 14 - 59. Coffee and doughnuts At a certain coffee shop,...Ch. 14 - Prob. 54E
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- Suppose you know that Bob's test score is above the mean, but he doesn't remember by how much. At least how many students must score lower than Bob?arrow_forwardIf a baby's weight is at the median, what's her percentile?arrow_forwardAt the same restaurant as in Question 19 with the same normal distribution, what's the chance of it taking no more than 15 minutes to get service?arrow_forward
- Clint, obviously not in college, sleeps an average of 8 hours per night with a standard deviation of 15 minutes. What's the chance of him sleeping between 7.5 and 8.5 hours on any given night? 0-(7-0) 200 91109s and doiw $20 (8-0) mol 8520 slang $199 galbrog seam side pide & D (newid se od poyesvig as PELEO PER AFTE editiw noudab temand van Czarrow_forwardTimes to complete a statistics exam have a normal distribution with a mean of 40 minutes and standard deviation of 6 minutes. Deshawn's time comes in at the 90th percentile. What percentage of the students are still working on their exams when Deshawn leaves?arrow_forwardSuppose that the weights of cereal boxes have a normal distribution with a mean of 20 ounces and standard deviation of half an ounce. A box that has a standard score of o weighs how much? syed by ilog ni 21arrow_forward
- Bob scores 80 on both his math exam (which has a mean of 70 and standard deviation of 10) and his English exam (which has a mean of 85 and standard deviation of 5). Find and interpret Bob's Z-scores on both exams to let him know which exam (if either) he did bet- ter on. Don't, however, let his parents know; let them think he's just as good at both subjects. algas 70) sering digarrow_forwardSue's math class exam has a mean of 70 with a standard deviation of 5. Her standard score is-2. What's her original exam score?arrow_forwardClint sleeps an average of 8 hours per night with a standard deviation of 15 minutes. What's the chance he will sleep less than 7.5 hours tonight? nut bow visarrow_forward
- Suppose that your score on an exam is directly at the mean. What's your standard score?arrow_forwardOne state's annual rainfall has a normal dis- tribution with a mean of 100 inches and standard deviation of 25 inches. Suppose that corn grows best when the annual rainfall is between 100 and 150 inches. What's the chance of achieving this amount of rainfall? wved now of sociarrow_forward13 Suppose that your exam score has a standard score of 0.90. Does this mean that 90 percent of the other exam scores are lower than yours?arrow_forward
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