Question: With reference to Exercise 11.7 construct (a) A 95% confidence interval for the average weekly sales when $45 is spent on advertising; (b) A 95%

With reference to Exercise 11.7 construct

(a) A 95% confidence interval for the average weekly sales when $45 is spent on advertising;

(b) A 95% prediction interval for the weekly sales when 845 is spent on advertising.

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