a sales manager collected the following data on x  annual sales andy  years of experience. The estimated regression equation for these data is yˆ  80  4x.AnnualYears of SalesSalesperson Experience...

a sales manager collected the following data on x  annual sales andy  years of experience. The estimated regression equation for these data is yˆ  80  4x.AnnualYears of SalesSalesperson Experience ($1000s)1 1 802 3 973 4 924 4 1025 6 1036 8 1117 10 1198 10 1239 11 11710 13 136a. Compute SST, SSR, and SSE.b. Compute the coefficient of determination r2. Comment on the goodness of fit.c. What is the value of the sample correlation coefficient?