Statistics for Business & Economics
12th Edition
ISBN: 9781285528830
Author: David R. Anderson
Publisher: Cengage Learning US
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Chapter 10.4, Problem 34E
Businessweek reported that there seems to be a difference by age group in how well people like life in Russia (Businessweek, March 10, 2008). The following sample data are consistent with the Businessweek findings and show the responses by age group to the question: “Do you like life in Russia?”
| Russian Age Group | ||
| 17–26 | 40 and over | |
| Sample | 300 | 260 |
| Responded Yes | 192 | 117 |
- a. What is the point estimate of the proportion of Russians aged 17 to 26 who like life in Russia?
- b. What is the point estimate of the proportion of Russians aged 40 and over who like life in Russia?
- c. Provide a 95% confidence
interval estimate of the difference between the proportion of young Russians aged 17 to 26 and older Russians aged 40 and over who like life in Russia.
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Chapter 10 Solutions
Statistics for Business & Economics
Ch. 10.1 - The following results come from two independent...Ch. 10.1 - Consider the following hypothesis test....Ch. 10.1 - Consider the following hypothesis test....Ch. 10.1 - Cond Nast Traveler conducts an annual survey in...Ch. 10.1 - The USA Today reports that the average expenditure...Ch. 10.1 - Suppose that you are responsible for making...Ch. 10.1 - Consumer Reports uses a survey of readers to...Ch. 10.1 - Will improving customer service result in higher...Ch. 10.2 - The following results are for independent random...Ch. 10.2 - Consider the following hypothesis test....
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