Essentials Of Statistics
4th Edition
ISBN: 9781305093836
Author: HEALEY, Joseph F.
Publisher: Cengage Learning,
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Textbook Question
Chapter 8, Problem 8.5P
a. A sample of middle-class families reported an average of 7.3 visits per year with close kin, while a sample of working-class families averaged 8.2 visits. Is the difference significant?
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Sample 2 (Working Class) |
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b. The middle-class families averaged 2.3 phone calls and 8.7 e-mail messages per month with close kin. The working-class families averaged 2.7 calls and 5.7 e-mail messages per month. Are these differences significant?
Phone Calls per Month | |
Sample 1 (Middle Class) |
Sample 2 (Working Class) |
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E-Mail Messages per Month | |
Sample 1 (Middle Class) |
Sample 2 (Working Class) |
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Chapter 8 Solutions
Essentials Of Statistics
Ch. 8 - For each of the following, test for the...Ch. 8 - Two sociologists administered questionnaires to...Ch. 8 - Do athletes in different sports vary in terms of...Ch. 8 - PA A number of years ago, the road and highway...Ch. 8 - SOC Are middle-class families more likely than...Ch. 8 - SOC Are college students who live in dormitories...Ch. 8 - GER Are senior citizens who live in retirement...Ch. 8 - As the director of the local Boys Club, you have...Ch. 8 - SOC A survey has been administered to random...Ch. 8 - For each problem, test the sample proportions for...
Ch. 8 - CJ About half of the police officers in Shinbone,...Ch. 8 - SW A large counseling center needs to evaluate...Ch. 8 - SOC At St. Algebra College, the sociology and...Ch. 8 - CJ The mayor of a large city started a crimeline...Ch. 8 - Prob. 8.15PCh. 8 - A researcher is studying the effects of the...
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