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A population forms a normal distribution with a mean of u=85 and a standard deviation of o=24. For the following samples, compute the z-score for

A population forms a normal distribution with a mean of u=85 and a standard deviation of o=24. For the following samples, compute the z-score for the sample mean M=91 for n = 4 scores. -0.50 O -0.25 O +0.50 O +0.25

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