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). Weekly Usage Annual (hours) Maintenance Expense 18 21 15 26 25 34 33 41 37 51 22 35 29 37 36 43 45 56 43 44 a. Develop the estimated regression equation that relates annual maintenance expense (in hundreds of dollars) to weekly usage hours (to 3 decimals). Expense = 9.8291 + 0.9561 Weekly Usage b. Test the significance of the relationship in part (a) at a 0.05 level of significance. Compute the value of the F test statistic (to 2 decimals). 45.92 The p value is less than 0.01 What is your conclusion? - Select your answer - c. Jensen expects the new machine to be used 30 hours per week. What is the expected annual maintenance expense in hundreds of dollars (to 2 decimals)? 38.51 hundred Develop a 95% prediction interval for the company's annual maintenance expense for this machine (to 2 decimals).

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