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Math Statistics STATS:DATA+MODELS-W/DVD

Check whether mean or median is a better summary of the percentage of white residents in the neighborhood and explains the reason.

Check whether mean or median is a better summary of the percentage of white residents in the neighborhood and explains the reason.

STATS:DATA+MODELS-W/DVD

STATS:DATA+MODELS-W/DVD

4th Edition

ISBN: 9780321986498

Author: DeVeaux

Publisher: PEARSON

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Features Features Normal distribution is characterized by two parameters, mean (µ) and standard deviation (σ). When graphed, the mean represents the center of the bell curve and the graph is perfectly symmetric about the center. The mean, median, and mode are all equal for a normal distribution. The standard deviation measures the data's spread from the center. The higher the standard deviation, the more the data is spread out and the flatter the bell curve looks. Variance is another commonly used measure of the spread of the distribution and is equal to the square of the standard deviation.

Chapter 5, Problem 42E

a.

To determine

Check whether mean or median is a better summary of the percentage of white residents in the neighborhood and explains the reason.

b.

To determine

Check whether the IQR or the standard deviation is a better summary of spread and explains the reason.

c.

To determine

Find the percentage of neighborhoods should have a percent white within one standard deviation of the mean, from the Normal model.

d.

To determine

Find the percentage of neighborhoods actually have a percent white within one standard deviation of the mean.

e.

To determine

Explain the discrepancy between parts c and d.

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Chapter 5, Problem 41E

Chapter 5, Problem 43E

Chapter 5 Solutions

STATS:DATA+MODELS-W/DVD

Ch. 5.1 - 1. Your statistics teacher has announced that the...Ch. 5.2 - Prob. 2JC Ch. 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. 5JC Ch. 5 - Prob. 1E Ch. 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. 27E Ch. 5 - Prob. 28E Ch. 5 - Prob. 29E Ch. 5 - Prob. 30E Ch. 5 - Prob. 31E Ch. 5 - Prob. 32E Ch. 5 - Prob. 33E Ch. 5 - Prob. 34E Ch. 5 - Prob. 35E Ch. 5 - 40. Rivets A company that manufactures rivets...Ch. 5 - Prob. 37E Ch. 5 - Prob. 38E Ch. 5 - Prob. 39E Ch. 5 - Prob. 40E Ch. 5 - Prob. 41E Ch. 5 - 46. Customer database A large philanthropic...Ch. 5 - Prob. 43E Ch. 5 - More IQs In the Normal model N(100, 16) from...Ch. 5 - Prob. 45E Ch. 5 - Prob. 46E Ch. 5 - Prob. 47E Ch. 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. 51E Ch. 5 - Prob. 52E

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