Q1 College students spend an average of 12 hours a week studying for a statistics course, with a stande deviation of 4.5 hours (Note: this is the population information). a) What is the probability that students in a sample of 40 spend on average more than 1 1 hours? b) What is the probability that students in a sample of 45 spend on average less than 13 hours? 0) What is the probability that students in a sample of 50 spend between 11.5 and 13 hours on average