1. A researcher would like to estimate college GPA after the fall semester (GPA) as a function of a student's combined SAT soore (SAT), rank in high school graduating dass (hsrank), and total hours taken through the fall semester (hours). Use the regression results below to answer parts (a) through (h). Dependent variable: GPA (3) SAT 0.002... 0.002. (0.0001) (0.0001) hsrank -0.003 (0.0001) -0.003 (0.0001) hours 0.002 0.002 (0.0003) (0.0003) constant 0.663 0.920* (0.071) 2.727401 (0.020) (0.070) 4,137 Observations 4,137 0.250 0.167 0.250 R2 Adjusted R2 F Statistic RSS 4,137 0.123 0.122 289.422 1573.328 220.3677 0.167 829.258 1494.483 299.7127 459,484 1345.455 448.7405 "p40.1; +40.05: 0:0.01 Note: a. GPA, = Bo + B.SAT+ zhsrank: +;hours, +8 Test the overall significance of the at the 5-percent level. Be sure to state the correct null and alternative hypotheses