Data file XR16058 lists the following data for a sample of automatic teller machine (ATM) customers:

time (seconds) to complete their transaction, estimated age, and gender (1 5 male, 0 5 female).

a. Determine the multiple regression equation and interpret the partial regression coefficients.

b. What is the estimated time required by a female customer who is 45 years of age?

c. Determine the 95% prediction interval for the time required by the customer described in part (b).

d. Determine the 95% confidence interval for the mean time required by customers similar to the one described in part (b).

e. Determine the 95% confidence interval for the population partial regression coefficients, 1 and 2.

f. Interpret the significance tests in the computer printout.

g. Analyze the residuals. Does the analysis support the applicability of the multiple regression model to these data?