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For population with mean of m = 100 and standard deviation of s = 10.

a. Find out the z-scores for each of the following X values.

       X = 105      X = 120       X = 130

       X = 90        X = 85         X = 60

b. Find out the score (X values) which corresponds to each of following z-scores.

       z = -1.00      z = -0.50       z = 2.00

       z = 0.70       z = 1.50         z = -1.50

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