How well does a student€™s Verbal SAT score (on an 800-point scale) predict future college grade point average (on a four-point scale)? Computer output for this regression analysis is shown, using the data in StudentSurvey:

(a) What is the predicted grade point average of a student who receives a 550 on the Verbal SAT exam?
(b) Use the information in the ANOVA table to determine the number of students included in the dataset.

(c) Use the information in the ANOVA table to compute and interpret R².
(d) Is the linear model effective at predicting grade point average? Use information from the computer output and state the conclusion in context.

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The regression equation is GPA = 2.03 + 0.00189 VerbalSAT Analysis of Variance Source Regression Residual Error Total DF MS 6.8029 0.1393 6.8029 48.84 0.000 343 47.7760 54.5788 344