Question: A population has a mean of μ =100 and standard deviation of σ= 20. Find the z-score corresponding to each of the following sample means obtained from this population.

a) M= 102 for a sample of n = 4 scores

b) M= 102 for a sample of n = 100 scores

c) M= 95 for a sample of n = 16 scores

d) M= 95 fro a sample of n = 25 scores