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Z-score distribution

A distribution has a standard deviation of 0=4. Find the z-score for each of the following locations in the distribution.
a. Above the mean by 4 points
b. Above the mean by 12 points
c. Below the mean by 2 points
d. Below the mean by 8 points

Solution Summary

Z-score distribution with a standard deviation of 4.0 is calculated. How far below of above the mean is determined.