A sample of n = 25 scores has a mean of M = 68. Find the z-score for this sample: a. If it was obtained from a population with m = 60 and s = 10 b. If it was obtained from a population with m = 60 and...

A sample of n = 25 scores has a mean of M = 68. Find the z-score for this sample:

a. If it was obtained from a population with m = 60 and s = 10

b. If it was obtained from a population with m = 60 and s = 20