Question: 12. A population forms a normal distribution with a mean of 80 and a standard deviation of 15. For each of the following

12. A population forms a normal distribution with a mean of 80 and a standard deviation of 15. For each of the following 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 84 for n 9 scores

b. M 84 for n 100 scores

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