1.9 Use the data in ATTENDRAW for this exercise. (i) Obtain the minimum, maximum, and average values for the variables atndrte, priGPA, and ACT. (ii) Estimate the model atndrte = ['30 + lpriGPA + BZACT + u, and write the results in equation form. Interpret the intercept. Does it have a useful meaning? (iii) Discuss the estimated slope coefcients. Are there any surprises? (iv) What is the predicted atndrte if pn'GPA = 3.65 and ACT = 20? What do you make of this result? Are there any students in the sample with these values of the explanatory variables? (V) If Student A has priGPA = 3.1 and ACT = 21 and Student B has priGPA = 2.1 and ACT = 26, What is the predicted difference in their attendance rates