Question

On a standardized exam, the scores are normally distributed with a mean of 55 and a

standard deviation of 5. Find the z-score of a person who scored 50 on the exam.

Answer 1

-1

Explanation:

To find the z-score of a person who scored 50 on the exam, we need to use the formula:

z = (x - μ) / σ

where x is the score, μ is the mean, and σ is the standard deviation.

Substituting the given values, we get:

z = (50 - 55) / 5 = -1

Therefore, the z-score of a person who scored 50 on the exam is -1.