The marketing manager of a large supermarket chain would like to use shelf space to predict the
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Question:
The marketing manager of a large supermarket chain would like to use shelf space to predict the sales of pet food. For a random sample of 12 similar stores, she gathered the following information regarding the shelf space, in feet, devoted to pet food and the weekly sales in hundreds of dollars. Use these data to answer questions 9 through 11.
| Store | 1 | 2 | 3 | 4 | 5 | 6 |
| Shelf Space | 5 | 5 | 5 | 10 | 10 | 10 |
| Weekly Sales | 1.6 | 2.2 | 1.4 | 1.9 | 2.4 | 2.6 |
| Store | 7 | 8 | 9 | 10 | 11 | 12 |
| Shelf Space | 15 | 15 | 15 | 20 | 20 | 20 |
| Weekly Sales | 2.3 | 2.7 | 2.8 | 2.6 | 2.9 | 3.1 |
Construct a 95% prediction interval estimate for the weekly sales, in hundreds of dollars, for a store with 8 feet of shelf space devoted to pet food.
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