10.7 What’s wrong? For each of the following, explain what is wrong and why.

  1. (a) The parameters of the simple linear regression model are b0, b1, and s.

  2. (b) To test H0: b1 = 0, use a t test.

  3. (c) For a particular value of the explanatory variable x, the confidence interval for the mean response will be wider than the prediction interval for a future observation.