A Variable X Has a Mean, µ, of 22 and a Standard

Multiple Choice

A variable x has a mean, µ, of 22 and a standard deviation, Ϭ, of 7. Determine the standardized version of x.

A) $z = \frac { x - 7 } { 22 }$
B) $z = \frac { x - 22 } { 7 }$
C) $x = \frac { z - 22 } { 7 }$
D) $z = - \frac { 22 } { 7 }$