16-4. Using the data presented in Exercise 16-1:

(a) Find a 95% confidence band for the population regression equation using the following X values (X = 2, 4, 6, 8, 10, 12, 14, 16).

(b) For X = 9, can we conclude at the α = 0.05 level that, on the average, Y will exceed 10.5?

(c) If X0 = 17, determine a 95% prediction interval for Y0.

(d) For α = 0.05, can we conclude that, for X0 = 17, the predicted value of Y does not exceed 18?

(e) For α = 0.05, determine if the underlying regression relationship generated the point (X0,Y0) = (18, 18).