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Review Question - QID 210442

Statistical Distributions Characteristics of the Normal Distribution A certain percentage of all observations will always fall within +/- certain standard deviations of the mean QID: 210442 (M2.OMB.18.1)
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QID 210442 (Type "210442" in App Search)
In 2013 the national mean score on the USMLE Step 1 exam was 227 with a standard deviation of 22. Assuming that the scores for 15,000 people follow a normal distribution, approximately how many students scored above the mean but below 250?
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