5. There are 5 elementary statistics class sections at a large university. Two classes have 20 students, 2 classes have 30 students and one class has 250 students. The Statistics Department reported that the mean elementary statistics class size was about 76 students. Several weeks later the student newspaper reported that elementary statistics class students were complaining that the mean class size was about 186 and way too big for effective learning. The Dean of the College was concerned about the story and the seeming divergence between the two reported mean class sizes and asked you to explain the situation and reconcile the two values.. 6. Suppose the rate of misprints in the printed text from a given publisher is three misprints per one hundred pages of text. Find the mean and variance of number of misprints you would expect to see in ten pages of text in a book printed by this publisher.