单选题

The Central Limit Theorem is best described as stating that the sampling distribution of the sample mean will be approximately normal for large-size samples:

A、 if the population distribution is normal.
B、 if the population distribution is symmetric.
C、 for populations described by any probability distribution.

【正确答案】 C

【答案解析】

The Central Limit Theorem. Given a population described by any probability distribution having a mean μ and finite variance σ ² , the sampling distribution of the sample mean