A random variable X is normally distributed with = 60. Convert the value of X to a z-score, if the standard deviation is
as given.
-$$X = 60 ; \sigma = 7$$
A) 0
B) 1
C) 7
D) $\frac { 60 } { 7 }$

Question

Quizplus · Accepted Answer

The z-score is calculated using the formula $z = \frac{X - \mu}{\sigma}$, where $X$ is the value, $\mu$ is the mean, and $\sigma$ is the standard deviation. Substituting $X = 60$, $\mu = 60$, and $\sigma = 7$, we get $z = \frac{60 - 60}{7} = 0$.

A Random Variable X Is Normally Distributed with = 60 X=60;σ=7X = 60 ; \sigma = 7X=60;σ=7

A Random Variable X Is Normally Distributed with = 60 $X = 60 ; \sigma = 7$