It Has Been Hypothesized That Overall Academic Success for Freshmen

Short Answer

It has been hypothesized that overall academic success for freshmen at college as measured by grade point average (GPA) is a function of IQ scores (X1), hours spent studying each week (X2), and one's high school average (X3). Suppose the regression equation is:

Y' = -6.9 + 0.055X1 + 0.107X2 + 0.0083X3.
The multiple standard error is 6.313 and R² = 0.826.

-How will a student's GPA be affected if an additional hour is spent studying each weeknight? ____________