Question: In problem 12.9. on page 467, a concert promoter used ticket price to predict merchandise sales. a. Construct a 95% confidence interval estimate of the

In problem 12.9. on page 467, a concert promoter used ticket price to predict merchandise sales.

a. Construct a 95% confidence interval estimate of the population mean merchandise sales for a ticket price of $80.

b. Construct a 95% prediction interval of merchandise sales for a ticket price of $80.

c. Explain the difference in the results in

(a) and (b).

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