A population has a mean μ = 46 and standard deviation $\sigma = 15$ Find the z-score for a population value of 13.
A) -33
B) -2.2
C) -0.5
D) 0.9

Question

Quizplus · Accepted Answer

The z-score formula is:

z = (x - μ) / σ

where x is the population value we want to find the z-score for.

Substituting the given values, we get:

z = (13 - 46) / 15
z = -33 / 15
z = -2.2

Therefore, the correct answer is B) -2.2.

A Population Has a Mean μ = 46 and Standard σ=15\sigma = 15σ=15