Scores for a common standardized college aptitude test are normally distributed with a mean of u = 481 and a standard deviation of o = 106. Randomly selected people are given a Test Preparation Course before taking this test. Assume, for sake of argument, that the test has no effect. If 1 of the people is randomly selected, find the probability that their score is at least 522.1. P(X > 522.1) = 3490 X If 15 of the people are randomly selected, find the probability that their mean score is at least 522.1. P(M > 522.1) = 0665 X