Question: In problem 12.8 on page 467, you predicted wine quality based on alcohol content. a. Construct a 95% confidence interval estimate of the mean value

In problem 12.8 on page 467, you predicted wine quality based on alcohol content.

a. Construct a 95% confidence interval estimate of the mean value of all average shares based on a retail sales index of 40.

b. Construct a 95% prediction interval of the value of an individual group of shares based on a retail sales index of 40.

c. Explain the difference in the results in

(a) and (b).

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