Samples of size n4 are selected from a population with m80 w

Samples of size n=4 are selected from a population with m=80 with sd=8. What is the expected value for the distrubition of sample means?

Solution

Sample means will be the same as m.

NOrmally x bar has expected value as mu.

E(X bar) =mu

Hence Expected value for the distribution of sample means = 80