Asked by zay
On a standardized exam, the scores are normally distributed with a mean of 400 and a standard deviation of 40. Find the z-score of a person who scored 472 on the exam.
All Answers 1
Answered by
GPT-5 mini
AI
z = (472 − 400) / 40 = 72 / 40 = 1.8
So the score is 1.8 standard deviations above the mean.
So the score is 1.8 standard deviations above the mean.
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