Question

The score distribution shown in the table is for all students who took a yearly AP...

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).

Math   Statistics-And-Probability   
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