12.71 In a survey of 27 undergraduates at the University of Illinois the accompanying results were obtained with grade point averages (y), the number of hours per week spent studying 1x12, the average number of hours spent preparing for tests 1x22, the number of hours per week spent in bars 1x32, whether students take notes or mark highlights when reading texts 1x4 = 1 if yes, 0 if no2, and the average number of credit hours taken per semester 1x52. Estimate the regression of grade point average on the five independent variables, and write a report on your findings. The data are in the data file Student Performance.