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.
-$$X = 66 ; \sigma = 4$$
A) $1.5$
B) 4
C) 6
D) 15

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 the given values, $z = \frac{66 - 60}{4} = 1.5$.

A Random Variable X Is Normally Distributed with = 60 X=66;σ=4X = 66 ; \sigma = 4X=66;σ=4

A Random Variable X Is Normally Distributed with = 60 $X = 66 ; \sigma = 4$