one of the following sample sizes for a large number of samples taken from a population will result in the mean of the sample means most closely approximating the population mean?

A. 1
B. 9
C. 89
D. 19

Question

one of the following sample sizes for a large number of samples taken from a population will result in the mean of the sample means most closely approximating the population mean?

 		A.	1
 		B.	9
 		C.	89
 		D.	19

mathmale · Answer

This is one of the most important concepts in statistics.  
The larger the sample size (within limits), the more accurately your sample mean will represent the actual, true population mean.  Read:  Law of Large Numbers.