The Central Limit theorem states which of the following for a sample size n?
a. The shape of the sampling distribution is always normal.
b. The mean of the set of sample means is always less than the population mean.
C. The standard deviation of the set of sample means is equal to the standard deviation of the population.
d. The mean of the set of sample means is equal to the mean of the population when n is large.
e. The standard deviation of the set of sample means is greater than the standard deviation of the population.