The Tire Rack, America's leading online distributor of tires and wheels, conducts extensive testing to provide customers with products that are right for their vehicle, driving style, and driving conditions. In addition, the Tire Rack maintains an independent consumer survey to help drivers help each other by sharing their long-term tire experiences. The following data show survey ratings. ( 1 to 10 scale with 10 the highest rating) for 18 maximum performance summer tires (Tire Rack website, February 3, 2009). The variable Steering rates the tire's steering responsiveness, Tread Wear rates quickness of wear based on the driver's expectations, and Buy Again rates the driver's overall tire satisfaction and desire to purchase the same tire again. Click on the datafile logo to reference the data. DATA Round your answers to four decimal places. a. Deveiop an estimated regression equation that can be used to predict the Buy Again rating given based on the Tread Wear rating. y^=2+3+ Tread Wear At the .01 level of significance, test for a significant relationship. Round your answers to four decimal places. a. Develop an estimated regression equation that can be used to predict the Buy Again rating given based on the Tread Wear rating. y^=(3+Tread Wear At the .01 level of significance, test for a significant relationship. b. Did the estimated regression equation developed in part (a) provide a good fit to the data? Explain. The input in the box below will not be graded, but may be reviewed and considered by your instructor. c. Develop an estimated multiple regression equation that can be used to predict the Buy Again rating given the Tread Wear rating and the Dry Traction rating. y^=(8+TreadWear+DryTraction d. Is the addition of the Dry Trection independent variable significant? Use =.01 e. Deveiop an estimated multipie regression equation that can be used to predict the Buy Again rating given the Tread Wear rating. the Dry Traction rating, and the Steering rating. y=(8)TreadWear+(.tstheadditionofDryTraction-Steeringrating f. ts the addition of the steering rating independent variable significant? Use =.01