For a population that has a standard deviation of 20, figure the standard deviation of the distribution

Question:

For a population that has a standard deviation of 20, figure the standard deviation of the of means for samples of size
(a) 2.
(b) 3.
(c) 4.
(d) 9.
Distribution
The word "distribution" has several meanings in the financial world, most of them pertaining to the payment of assets from a fund, account, or individual security to an investor or beneficiary. Retirement account distributions are among the most...