The score distribution shown in the table is for all students who took a yearly AP statistics exam. Complete parts a) through c). 
Score 
Percent of students 


5 
13.313.3 

4 
22.422.4 

3 
24.924.9 

2 
18.918.9 

1 
20.520.5 
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?
C) Consider the mean scores of random samples of 40 AP statistics students. Describe the sampling model for these means (shape, center, and spread).
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