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 is 160 and standard deviation is 32. The mean and standard error of the sample mean, respectively, are:

A) 160 and 32 .
B) 64 and 32 .
C) 160 and 4 .
D) 20 and 4 .