All the Possible Samples of N = 3 Scores Are

Multiple Choice

All the possible samples of n = 3 scores are selected from a population with  = 30 and  = 5 and the mean is computed for each of the samples.If the average is calculated for all of the sample means,what value will be obtained?

A) 30
B) Greater than 30
C) Less than 30
D) Impossible to predict