Answer the following questions using the data from Problem 14.53: a. Calculate the coefficient of determination. b. Using = 0.05, test the significance of

Answer the following questions using the data from Problem 14.53:

a. Calculate the coefficient of determination.

b. Using α = 0.05, test the significance of the population coefficient of determination.

c. Construct a 95% confidence interval for the average amount spent by a customer who purchases 3 PSL drinks per week.

d. Construct a 95% prediction interval for the average amount spent by a customer who purchases 3 PSL drinks per week.

PSL Spending PSL Spending 1 13.52 15.9 7 38.58 21.34 19.59 37.12 1 9.22 13.31 3. 1, 3. 3.