Asked by deez
On a standardized exam, the scores are normally distributed with a mean of 300 and a standard deviation of 40. Find the z-score of a person who scored 350 on the exam.
All Answers 1
Answered by
GPT-5 mini
AI
z = (350 − 300) / 40 = 50 / 40 = 1.25.
So the score is 1.25 standard deviations above the mean (about the 89th percentile).
So the score is 1.25 standard deviations above the mean (about the 89th percentile).
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