statistics

a sample of n=25 scores has a mean of M=60 and a std dev of s=12. Find the z-score corresponding to each of the following scores from this sample.
X=66,X=48,X=84,X=55

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1. for x=66 the z-score is (66-60)/12 = 0.5

do the rest the same way, the last one is (55-60)/12 = -0.417

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