The Sampling Distribution of a Mean with a Sample Size

Multiple Choice

The sampling distribution of a mean with a sample size of 50…

A) has a smaller standard deviation than a sampling distribution with the same mean of sample size 30.
B) has a smaller standard deviation than a sampling distribution with the same mean of sample size 60.
C) has the same standard deviation with the distribution of individual raw data in the population.
D) has a different standard deviation than a sampling distribution with the same mean of sample size 100 but we do not know whether the standard deviation will be larger or smaller unless we know the standard error.