Two intervals are given, A and B, for the same value of the explanatory variable. A: 4.0 to 6.4; B: 3.7 to 6.7 ; (a) Which interval is the confidence interval for the mean response? A Which interval is the prediction interval for the response? B 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 Exact number, no tolerance