Suppose You Estimate the Sample Regression Function $$Midt\widehat {erm ~Sc}ore = 62.33 + 4.62 \cdot \text { Time Taken } - 0.038 \cdot \text { Time Taken } { } ^ { 2 }$$

Multiple Choice

Suppose you estimate the sample regression function $$Midt\widehat {erm ~Sc}ore = 62.33 + 4.62 \cdot \text { Time Taken } - 0.038 \cdot \text { Time Taken } { } ^ { 2 }$$
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.