A sales manager collected the following data on annual sales for new customer accounts and the number of years of experience for a sample of 10 salespersons. Years of Salesperson Experience Annual Sales ($1000) 1 1 85 3 100 5 105 6 108 7 120 a. Compute the residuals and choose a residual plot for this problem. z (to 1 decimal) 2 3 4 5 6 7 8 9 10 9 11 11 12 13 124 131 135 141 143