Interpret the Area Under the Standard Normal Curve as a Probability

Multiple Choice

Interpret the Area under the Standard Normal Curve as a Probability
-Scores on a standardized test are normally distributed with a mean of 104 and a standard deviation of 20 . An individual's test score is found to be 109 . Find the $\mathrm { z }$ -score corresponding to this value.

A) $0.25$
B) $- 0.25$
C) $4.00$
D) $- 4.00$