A random sample is obtained from a normal population with a mean of m = 76 and a standard deviation of s = 20. The sample mean is M = 84. a. Is this a representative sample mean or an extreme value...

A random sample is obtained from a normal population with a mean of m = 76 and a standard deviation of s = 20. The sample mean is M = 84.

a. Is this a representative sample mean or an extreme value for a sample of n = 4 scores?

b. Is this a representative sample mean or an extreme value for a sample of n = 25 scores?