Question: Using the data of Exercise 12.9 and the estimate of a2 from Exercise 12.19 compute, 95% confidence intervals for the predicted response and the mean

Using the data of Exercise 12.9 and the estimate of a2 from Exercise 12.19 compute, 95% confidence intervals for the predicted response and the mean response when x1 = 75, x2 = 24, x3 = 90, and x4 = 98. Show calculations.

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