An analyst is looking at the distribution of GPA's across the different undergraduate standings in a university. She collected a sample of GPA's from all 4 standings and ran an ANOVA analysis where GPA is the dependent variable and dummy variables Junior (Dju) and Seniors (Dse) are the independent variables. Dummies for Sophomores and Freshman were excluded from the regression. The regression results are presented below: Proc glm data=forgpa; model gpa= Dju Dse; Parameter Intercept Dju Dse Estimate 2.96538 -0.38472 -0.42993 Standard Error 0.13079 0.17870 0.32780 t Value 21.14 -2.15 -1.31 Pr > It! <.0001 based on these results the analyst reports regression demonstrates that average juniors gpa is different from freshmen but we are not certain seniors gpa. correct in making this statement explain>