Students at a major university are complaining of a serious housing crunch. Many of the university's students, they complain, have to commute too far to school because there is not

enough housing near campus. The university officials respond with the following information: the mean distance commuted to school by students is 15.8 miles, and the standard deviation of the distance commuted is 3.4 miles. Assuming that the university officials' information is correct, complete the following statements about the distribution of commute distances for students at this university. v of the commute(a) According to Chebyshev's theorem, at least ?distances lie between 9.0 miles and 22.6 miles. (b) According to Chebyshev's theorem, at least 7v of the commute distances lie between 10.7 miles and 20.9 miles. (c) Suppose that the distribution is bell-shaped. According to the empirical rule, approximately ?v of the commute distances lie between 9.0 miles and 22.6 miles. (d) Suppose that the distribution is bell-shaped. According to the empirical rule, approximately 68% of the commute distances lie between miles and miles.