Suppose a random variable x is best described by a normal distribution with $\mu = 60 \text { and } \sigma = 13 \text {. }$ . Find the z-score that corresponds to the value x = 112.
A) 4
B) 52
C) $\frac { 15 } { 13 }$
D) 13

Question

Quizplus · Accepted Answer

The z-score is calculated using the formula $ z = \frac{x - \mu}{\sigma} $. Substituting the given values, $ z = \frac{112 - 60}{13} = 4 $.

Suppose a Random Variable X Is Best Described by a Normal