Statistics for Business and Economics (13th Edition)
13th Edition
ISBN: 9780134506593
Author: James T. McClave, P. George Benson, Terry Sincich
Publisher: PEARSON
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Textbook Question
Chapter 8.3, Problem 8.29LM
The data for a random sample of 10 paired observations are shown in the table below
| Pair | Sample from Population 1 | Sample from Population 2 |
| 1 | 19 | 24 |
| 2 | 25 | 27 |
| 3 | 31 | 36 |
| 4 | 52 | 53 |
| 5 | 49 | 55 |
| 6 | 34 | 34 |
| 7 | 59 | 66 |
| 8 | 47 | 51 |
| 9 | 17 | 20 |
| 10 | 51 | 55 |
- a. If you wish to test whether these data are sufficient to indicate that the
mean for population 2 is larger than that for population 1, what are the appropriate null and alternative hypotheses? Define any symbols you use. - b. Conduct the test, part a, using α = .10.
- c. Find a 90% confidence interval for μd. Interpret this result.
- d. What assumptions are necessary to ensure the validity of this analysis?
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Chapter 8 Solutions
Statistics for Business and Economics (13th Edition)
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