D Question 2 1 pts The following is part of the results of a regression analysis involving sales (Y in millions of dollars), advertising expenditures (X1 in thousands of dollars), and a number of salespeople (X2) for a corporation. The regression was performed on a sample of 10 observations. Coefficient Standard Error (Intercept) -11 . 340 20 . 412 X1 0 . 798 0 . 332 X2 0. 141 0. 278 ANALYSIS OF VARIANCE Source of Degrees of Sum of Mean Variation Freedom Squares Square F Regression 822.088 Error 736.012 Determine the adjusted multiple coefficient of determination. O 0.607 (60.7%) O 0.89 (89%) O 0.528 (52.8%) O 0.393 (39.3%) O 0.678 (67.8%)