Assume That $z$ Scores Are Normally Distributed with a Mean of 0 and of 0

Multiple Choice

Assume that $z$ scores are normally distributed with a mean of 0 and a standard deviation of 1 . If $\mathrm { P } ( - \mathrm { a } < \mathrm { z } < \mathrm { a } ) = 0.4314$ , find $\mathrm { a }$ .

A) $1.49$
B) $- 0.18$
C) $0.3328$
D) $0.57$