Question: A score of X = 75 is measured in a population with a mean of = 100. A z-score of z = +1.50 is

A score of X = 75 is measured in a population with a mean of μ = 100. A z-score of z = +1.50 is calculated. Without knowing the standard deviation, explain why the z-score of z = +1.50 is incorrect.

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