Linear Regression

Could you assist me with this question, please?

2. Grade point average (refer \" CHlPR] tht\" J. The director of admissions of a small college selected 120 students at random from the new frmhman class in a study,r to determine whether a student's grade point average [GPA] at the end of the freshman year (1") can he predicted from the ACT test score (X). Assume that regression model 1"; = g + 1311': + Ei is appropriate. Use appropriate software package to t a simple linear regression [a] Obtain the rmiduals er. Do they,r sum to zero? [h] Estimate :12 and er. In what units is er expressed