Random Samples of Size 64 Are Taken from an Infinite

Multiple Choice

Random samples of size 64 are taken from an infinite population whose mean and standard deviation are 24 and 6.4, respectively. The distribution of the population is unknown. The mean and the standard error of the mean are

A) 64 and 6.4.
B) 64 and 0.8.
C) 24 and 6.4.
D) 24 and 0.8.