The marketing manager of a large supermarket chain

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 15 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.

Store Shelf Space Weekly Sales
1 5 1.3
2 5 1.6
3 5 1.4
4 10 1.7
5 10 1.9
6 10 2.3
7 15 2.2
8 15 2
9 15 1.8
10 20 2.2
11 20 2.4
12 20 2.9
13 25 2.9
14 25 2.7
15 25 2.5

Find the 99% prediction interval for the Weekly Sales when the shelf space is 30. (round to 3 decimal places)

– A. 2.325 < y < 3.232
– B. 2.000 < y < 4.000
– C. 2.165 < y < 3.915
– D. 2.094 < y < 3.927

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