Question

For results based on a small random sample from a bell-shaped distribution, the distribution of the sample mean is

A. approximately a normal distribution.
B. not a bell-shaped distribution.
C. a uniform distribution.
D. approximately a standard normal (z-score) distribution

Answer 1

Correct answer is (A) {Normal distribution}

Explanation:

sampling distribution of the sample mean is still approximately normal.

Answer 2

A. approximately a normal distribution.

Explanation:

There may be a few differences, but the sampling distribution of the sample mean is still approximately normal.

So the correct answer is:

A. approximately a normal distribution.