Question: In a simple linear regression based on 30 observations, the following information is provided: = -6.92 + 1.35x and se = 2.78. Also, se

In a simple linear regression based on 30 observations, the following information is provided: = -6.92 + 1.35x and se = 2.78. Also, se (0) evaluated at x = 30 is 1.02.

a. Construct the 95% confidence interval for E(y) if x = 30.

b. Construct the 95% prediction interval for y if x equals 30.

c. Which interval is narrower? Explain.

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a With df n k 1 30 1 1 28 and 005 we find t 2df t 002528 2048 Also Thus ... View full answer

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