(A) Interpret every structural parameter in the following regression:

GPAi = 0.37 + 0.81 HSGPAi + 0.00001 SATi–0.38 GREEKi + ei where GPA is grade point average in college;

HSGPS is high school GPA;

SAT is SAT score.

GREEK equals 1 if the student is a member of a sorority or fraternity; 0 otherwise.

(B) Draw a diagram reflecting the regression results with GPA on the vertical axis and SAT on the horizontal axis.