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AP® Statistics

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Which Is Normal?

APSTAT-VRFTEQ

Which of the following sampling distributions involving sample means will be approximately normal?

I. A sample of size n = $55$ from a population that is strongly skewed right.
II. A sample of size n = $20$ from a population that is slightly skewed right with no outliers.
III. A sample of size n = $5$ from a population that is roughly normal.

A

I only.

B

II only.

C

III only.

D

II and III only.

E

I, II, and III.