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How do you find the z-score corresponding to a score of X = 100 for the distributions given below? How do you know what direction they are going?

a. mu = 80 and sigma = 10
b. mu = 80 and sigma = 5
c. mu = 105 and sigma = 10
d. mu = 105 and sigma = 5

Above, mu represents Mean and sigma represents Standard Deviation.

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