In a Population of Scores, X = 83 Corresponds to Z

Multiple Choice

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) $\mu$ = 85 and $\sigma$
= 4
B) $\mu$ = 85 and $\sigma$
= 2
C) $\mu$ = 81 and $\sigma$
= 4
D) $\mu$ = 81 and $\sigma$
= 6