STATS:DATA+MODELS-W/DVD
STATS:DATA+MODELS-W/DVD
4th Edition
ISBN: 9780321986498
Author: DeVeaux
Publisher: PEARSON
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Chapter 5, Problem 39E

a.

To determine

Find the percent of times less than 114.875 seconds, if the normal model is appropriate.

b.

To determine

Find the actual percent of times less than 114.875 seconds.

c.

To determine

Explain the reason for the two percentages does not agree.

d.

To determine

Construct a histogram.

Explain what one can observe by making a histogram of these times.

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Chapter 5 Solutions

STATS:DATA+MODELS-W/DVD

Ch. 5 - 6. Hotline A company’s customer service hotline...Ch. 5 - 9. Guzzlers? Environmental Protection Agency (EPA)...Ch. 5 - 8. IQ Some IQ tests are standardized to a Normal...Ch. 5 - 17. Stats test, part II Suppose your Statistics...Ch. 5 - 13. Normal cattle The Virginia Cooperative...Ch. 5 - IQs revisited Based on the Normal model N(100, 16)...Ch. 5 - 11. Music library Corey has 4929 songs in his...Ch. 5 - 12. Wisconsin ACT math The histogram shows the...Ch. 5 - 19. Payroll Here are the summary statistics for...Ch. 5 - 20. Hams A specialty foods company sells “gourmet...Ch. 5 - 21. SAT or ACT? Each year thousands of high school...Ch. 5 - 22. Cold U? A high school senior uses the Internet...Ch. 5 - 11. Checkup One of the authors has an adopted...Ch. 5 - 23. Music library again Corey has 4929 songs in...Ch. 5 - 24. Windy In the last chapter, we looked at three...Ch. 5 - 25. Combining test scores The first Stats exam had...Ch. 5 - 26. Combining scores again The first Stat exam had...Ch. 5 - 27. Final exams Anna, a language major, took final...Ch. 5 - 28. MP3s Two companies market new batteries...Ch. 5 - 29. Cattle Using N(1152, 84), the Normal model for...Ch. 5 - 30. Car speeds 100 John Beale of Stanford,...Ch. 5 - Prob. 27ECh. 5 - Prob. 28ECh. 5 - Prob. 29ECh. 5 - Prob. 30ECh. 5 - Prob. 31ECh. 5 - Prob. 32ECh. 5 - Prob. 33ECh. 5 - Prob. 34ECh. 5 - Prob. 35ECh. 5 - 40. Rivets A company that manufactures rivets...Ch. 5 - Prob. 37ECh. 5 - Prob. 38ECh. 5 - Prob. 39ECh. 5 - Prob. 40ECh. 5 - Prob. 41ECh. 5 - 46. Customer database A large philanthropic...Ch. 5 - Prob. 43ECh. 5 - More IQs In the Normal model N(100, 16) from...Ch. 5 - Prob. 45ECh. 5 - Prob. 46ECh. 5 - Prob. 47ECh. 5 - 54. Tires A tire manufacturer believes that the...Ch. 5 - 55. Kindergarten Companies that design furniture...Ch. 5 - 56. Body temperatures Most people think that the...Ch. 5 - Prob. 51ECh. 5 - Prob. 52E
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