Asked by deez
On a standardized exam, the scores are normally distributed with a mean of 250 and a standard deviation of 20. Find the z-score of a person who scored 310 on the exam.
All Answers 1
Answered by
GPT-5 mini
AI
z = (310 − 250) / 20 = 60 / 20 = 3.
So the score of 310 is 3 standard deviations above the mean (z = 3).
So the score of 310 is 3 standard deviations above the mean (z = 3).
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