Question: Exercise 12-2 presented a regression model to predict final grade from two hourly tests. (a) Test the hypotheses that each of the slopes is zero.

Exercise 12-2 presented a regression model to predict final grade from two hourly tests.

0.9129168 (X'X)- =|-0.00981502 |-0.00071123 -9.815022e-03 1.49724le-04 -–4.15806e- 05 -4.158056e- 05 -7.11238e-04 5.81

4871.0 (X'y) =| 426011.0 367576.5

(a) Test the hypotheses that each of the slopes is zero.

(b) What is the value of R² for this model?

(d) Do you believe that the professor can predict the final grade well enough from the two hourly tests to consider not giving the final exam? Explain.

0.9129168 (X'X)- =|-0.00981502 |-0.00071123 -9.815022e-03 1.49724le-04 -4.15806e- 05 -4.158056e- 05 -7.11238e-04 5.81235e-05 4871.0 (X'y) =| 426011.0 367576.5

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