Z-scores A normal distribution of scores has a standard deviation of σ =10; and a μ = 70. Find the z-scores corresponding to each of the following values: a)
A score that is 20 points above the mean. (Hint: what score is 20 points above the mean of μ = 70?) b) A score that is 10 points below the mean. c) A score of x = 50. d) A score of x = 35.
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