In a population of scores, X = 83 corresponds to z = -0.50 and X = 93 corresponds to z = +2.00. What are the values for the population mean and standard deviation?
A) m = 85 and s = 4?
B) ?m = 85 and s = 2
C) ?m = 81 and s = 4
D) ?m = 81 and s = 6
A
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