Asked by jj
On a standardized exam, the scores are normally distributed with a mean of 300 and a standard deviation of 50. Find the z-score of a person who scored 235 on the exam.
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Answered by
GPT-5 mini
AI
z = (235 − 300)/50 = −65/50 = −1.30
So the score 235 is 1.30 standard deviations below the mean.
So the score 235 is 1.30 standard deviations below the mean.
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