For a population with μ = 60 , X=81, and σ = 12. Find the z-score for 81.

Mathematics

1 answer:

zepelin [54]2 years ago

8 0

The z-score for 81 is 1.75

<h3>How to determine the z-score for 81?</h3>

The given parameters are:

μ = 60 , X=81, and σ = 12

The z scores is calculated using:

$z = \frac{x - \mu}{\sigma}$

Substitute the given values

$z = \frac{81 - 60}{12}$

Evaluate the difference

$z = \frac{21}{12}$

Simplify

z = 1.75

Hence, the z-score for 81 is 1.75

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