Introductory Statistics
1st Edition
ISBN: 9781938168208
Author: Barbara Illowsky, Susan Dean
Publisher: OpenStax College
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Textbook Question
Chapter 13, Problem 75H
Three students, Linda, Tuan, and Javier, are given five laboratory rats each for a nutritional experiment. Each rat’s
weight is recorded in grams. Linda feeds her rats Formula A, Tuan feeds his rats Formula B, and Javier feeds his rats
Formula C. At the end of a specified time period, each rat is weighed again and the net gain in grams is recorded.
| Linda's rats | Tuan's rats | Javier's rats |
| 43.5 | 47.0 | 51.2 |
| 39.4 | 40.5 | 40.9 |
| 41.3 | 38.9 | 37.9 |
| 46.0 | 46.3 | 45.0 |
| 38.2 | 44.2 | 48.6 |
Table 13.31
Determine whether or not the variance in weight gain is statistically the same among Javier’s and Linda’s rats. Test at a
significance level of 10%.
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Chapter 13 Solutions
Introductory Statistics
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