The following is the ANOVA summary table for a multiple regression model with two independent variables:

If and SSR (X1) = 45 and SSR(X2) = 25,
a. Determine whether there is a significant relationship between Y and each independent variable at the 0.05 level of significance.
b. Compute the coefficients of partial determination, r2Y1.2 and r2y2.1, and interpret their meaning.

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Degrees Sum of Mean of Freedom Squares Squares Source Regression Error Total 18 20 60 120 180