The distribution of sample means ____ .
A)is always a normal distribution.
B)will be normal only if the population distribution is normal.
C)will be normal only if the sample size is at least n = 30.
D)we be normal if either the population is normal or the sample size is n 30.

Question

The distribution of sample means ____ .
A)is always a normal distribution.
B)will be normal only if the population distribution is normal.
C)will be normal only if the sample size is at least n = 30.
D)we be normal if either the population is normal or the sample size is n > 30.

Quizplus · Accepted Answer

According to the Central Limit Theorem, the distribution of sample means will be approximately normal if the sample size is large enough (usually n > 30) or if the population distribution is normal.

The Distribution of Sample Means ____