24. A normal distribution has a mean of u = 60 and a standard deviation of o = 12. For each of the follow- ing samples, compute the z-score for the sample mean and determine whether the sample mean is a typical, representative value or an extreme value for a sample of this size. a. M = 64 for n = 4 scores b. M = 64 for n = 9 scores c. M = 69 for n = 4 scores d. M = 69 for n = 9 scores e. M = 66 for n = 16 scores f. M = 66 for n = 36 scores g. M = 54 for n = 4 scores h. M = 54 for n = 36 scores