Two intervals are given, A and B, for the same value of the explanatory variable. A: 17.9 to 20.9: B: 16.3 to 22.5; (a) Which interval is the confidence interval for the mean response? Which interval is the prediction interval for the response? A (b) What is the predicted value of the response variable for this value of the explanatory variable? Enter the exact answer. The predicted value is i Exact number, no tolerance