A Score from a Normal Distribution May Be Converted to a Score

Multiple Choice

A score from a normal distribution may be converted to a score on the standard normal distribution by.

A) $z = \frac { X - \sigma } { \mu }$
B) $z = ( \mu - \sigma ) X$
C) $z = \frac { X - \mu } { \sigma }$
D) $z = ( X - \mu ) \sigma$