Two intervals are given, A and B, for the same value of the explanatory variable.

A: 1.4 to 6.6 ;

B: 2.5 to 5.5 ;

(a) Which interval is the confidence interval for the mean response? A OR B Which interval is the prediction interval for the response?

A OR B

(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