A business statistics professor at State College would like to develop a regression model to predict the final exam scores for students based on their current GPAs, the number of hours they studied for the exam, and the number of times they were absent during the semester. The data for these variables can be found in the Excel file final exam scores 1.xlsx.

a. Construct a regression model using all three independent variables.

b. Calculate the multiple coefficient of determination.

c. Test the significance of the overall regression model using α = 0.10.

d. Calculate the adjusted multiple coefficient of determination.