STATS:DATA+MODELS-W/DVD
4th Edition
ISBN: 9780321986498
Author: DeVeaux
Publisher: PEARSON
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Chapter 5, Problem 48E
a.
To determine
Explain whether it would be reasonable to hope that the tires will last 40,000 miles if you buy one of these tires.
b.
To determine
Find the fraction of these tires expected to last less than 30,000 miles.
c.
To determine
Find the fraction of tires expected to last between 30,000 miles and 35,000 miles.
d.
To determine
Find the IQR of the tread lives.
e.
To determine
Find the mileage at which the dealer is willing to give refunds to not more than one of every 25 customers, if he guarantees these tires to last.
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Chapter 5 Solutions
STATS:DATA+MODELS-W/DVD
Ch. 5.1 - 1. Your statistics teacher has announced that the...Ch. 5.2 - Prob. 2JCCh. 5.2 - 4. A company manufactures wheels for in-line...Ch. 5.3 - 5. As a group, the Dutch are among the tallest...Ch. 5.3 - Prob. 5JCCh. 5 - Prob. 1ECh. 5 - 2. Mensa People with z-scores above 2.5 on an IQ...Ch. 5 - 3. Temperatures A town’s January high temperatures...Ch. 5 - 4. Placement exams An incoming freshman took her...Ch. 5 - 5. Shipments A company selling clothing on the...
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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