Kang of BUAL majors' starting salaries

Kang of BUAL majors' starting salaries. Does Kang's modeling 1 affect starting salary? Let SAL=salary in dollars, GPA=grade point average on a 4.0 scale, PM=1 if student took modeling 1, and PM= otherwise. the data, which contains information on 50 recent graduates, we obtain the regression equation: SAL =24,200+ 1,643GPA +5,033 PM (a) the equation (b) How would you modify the equation to see whether women had lower starting salaries than men? (c) How would you modify the equation to see if the value of predictive modeling was the same for men and women?