Question: AP Stats 2011 The College Board reported the score distribution shown in the table for all students who took the 2011 AP Statistics exam. a)

AP Stats 2011 The College Board reported the score distribution shown in the table for all students who took the 2011 AP Statistics exam.

Score Percent of Students 5 12.4 432 21.4 3 25.1 2 17.6

a) Find the mean and standard deviation of the scores.

b) If we select a random sample of 40 AP Statistics students, would you expect their scores to follow a Normal model? Explain.

c) Consider the mean scores of random samples of 40 AP Statistics students. Describe the sampling model for these means (shape, center, and spread).

Score Percent of Students 5 12.4 432 21.4 3 25.1 2 17.6 1 23.5

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