Random Samples of Size N Were Selected from Populations with the Means

Short Answer

Random samples of size n were selected from populations with the means and variances given here. Find the mean and standard deviation of the sampling distribution of the sample mean in each case:
a. n = 36,
= 12,
= 9
Mean: ______________
SD: ______________
b. n = 100,
= 15,
= 4
Mean: ______________
SD: ______________
c. n = 8,
= 100,
= 1
Mean: ______________
SD: ______________