AP Stats 2011, again An AP Statistics teacher had 63 students preparing to take the AP exam discussed in Exercise 55. Though they were obviously not a random sample, he considered his students to be...

AP Stats 2011, again An AP Statistics teacher had 63 students preparing to take the AP exam discussed in Exercise 55. Though they were obviously not a random sample, he considered his students to be “typical” of all the national students. What’s the probability that his students will achieve an average score of at least 3?