Question

Suppose you estimate the sample regression function     Mid term score = 62.33 + 4.62 x time...

Suppose you estimate the sample regression function

    Mid term score = 62.33 + 4.62 x time taken - 0.038 x Time taken^2

You should conclude that the marginal effect of time taken on midterm score is

A. 4.62.

B. -0.038.

C. 4.62 - 0.038.

D. 4.62 - 0.076 ∙ Time Taken.
Math   Statistics-And-Probability   
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