The data ser contains the ACT scores, average weekly homework hours and the GPA for ten college students. GPA is based on a four-point scale and has been rounded to one digit after the decimal. 7. We are interested in estimating the relationship between GPA and ACT using OLS as follows: GPA = ,6}, + AACT . Which of the following statements is false? (a) If the ACT score is increased by 5 points, predicted GPA increases by 0.538 points. (b) The residual for student 8 is -0.13. (c) 59.61% of the variation in GPA for these eight students is explained by ACT. ((1) There is no meaning attached to the intercept. (e) None of the above. 8. Now suppose that instead of running a simple regression, we run a multiple regression by incorporating homework hours (hhwork) as an additional explanatory variable: GPA = 30 + [ZACT + 32mm . Which of the following statements is false? (a) Student A and Student B have the same ACT score but Student A does 3 more hours of homework than Student B. The regression predicts that Student A's GPA will be 0.35 points higher than Student B. (b) Student C has an ACT of 28 and does 6.5 weekly hours of homework. Her predicted GPA is 3.4. (0) Based on the results of the multiple regression, we know that the estimated slope coefcient