A statistical program is recommended. A media company is in the process of deciding whether to purchase a maintenance contract for a new piece of camera equipment or pay for the maintenance themselves. Managers feel that cost required to maintain the equipment should be related to the amount of time it is used, and they collected the following data on hours used (per week) and yearly maintenance costs (in dollars). Hours Used per Week Maintenance Cost per Year 13 1550 9 2250 19 2950 28 3650 31 4700 16 3100 24 3300 31 3950 4D 5100 38 3950 (a) Develop the estimated regression equation that could be used to predict the yearly maintenance costs (in dollars) given the weekly usage (in hours). (Round your numerical values to two decimal places.) 5?: (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. u H0: .30 1+ 0 Ha: .60 = 0 (3' H0: .31 : 0 Ha: ,61 at 0 O H0: {31 1+ 0 Ha: .61 = 0 (3' H0: I90 : 0 Ha: .60 at 0 C'- Ho: {31 2 0 Ha: 51