A statistical program is recommended. Jensen Tire & Auto is in the process of deciding whether to purchase a maintenance contract for its new computer wheel alignment and balancing machine. Managers feel that maintenance expense should be related to usage, and they collected the following information on weekly usage (hours) and annual maintenance expense (in hundreds of dollars). Annual Maintenance Expense Weekly Usage (hours) 17.0 22.0 30.0 37.0 47.0 30.5 32.5 39.0 51.5 40.0 (a) Develop the estimated regression equation that could be used to predict the annual maintenance expense (in hundreds of dollars) given the weekly usage (in hours). (Round your numerical values to two decimal places.) a l (b) Test the signicance of the relationship in part (a) at a 0.05 level of significance. (Use the Ftest.) State the null and alternative hypotheses. O \"0:181 = 0 Ha: )31 e D 0 H0261: 0 Ha: [31 = 0 O H0: 50 = 0 Ha: 50 a 0 O H0: 60 a 0 Ha: 430 = 0 O HO: {3'1 2 0 Ha: .31