Question 4 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 0(2) for a corporation. The regression was performed on a sample of 210 observations. Coefficient Standard Error (Intercept) 711.340 X1 0.798 X2 0.141 ANALYSIS OF VARIANCE Source of Degrees of Sum of Variation Freedom Squares Regression 822.083 Error F3600 Construct 98% condence interval of g. 0 [-0.69, 0.97] 0 [-0.1310419) o to. 1, 0.3) 0 [0.520.231 o (-0.5, 0.78] 20.412 0.332 0.278 Mean Square