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using Case Exhibit 21.1-1 on page 527:
• Formulate a statistical hypothesis appropriate for the consumer group’s purpose.
• Compute the mean average miles per gallon.
• Compute the sample variance and sample standard deviation.
• Determine the most appropriate test using the 0.05 significance level.
Purchaser | Miles Per Gallon, x |
1 | 30.9 |
2 | 24.5 |
3 | 31.2 |
4 | 28.7 |
5 | 35.1 |
6 | 29 |
7 | 28.8 |
8 | 23.1 |
9 | 31 |
0 | 30.2 |
11 | 28.4 |
12 | 29.3 |
13 | 27 |
14 | 26.7 |
15 | 31 |
16 | 23.5 |
17 | 29.4 |
18 | 26.3 |
19 | 27.5 |
20 | 28.2 |
21 | 28.4 |
22 | 29.1 |
23 | 21.9 |
24 | 30.9 |
11 years ago
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