For a population with an unknown distribution, the form of the sampling distribution of the sample mean is
a. approximately normal for small sample sizes.
b. exactly normal for large sample sizes.
c. exactly normal for small sample sizes.
d. approximately normal for large sample sizes.
d
RATIONALE: Central Limit Theorem states: In selecting random samples of size n from a population, the sampling distribution of the sample mean can be approximated by a normal distribution as the sample size becomes large.
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