A, b, c, d, e

17. The Institute for College Access and Success reported that 67% of college students in a recent year graduated with student loan debt. A random sample of 85 graduates is drawn. a) Find the mean of the sample proportion. b) Find the standard deviation of the sample proportion. c) Find the probability that less than 60% of the people in the sample were in debt. d) Find the probability that between 65% and 80% of the people in the sample were in debt. e) Would it be unusual if less than 50% of the people in the sample were in debt