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Calculations with Mean and Standard Deviation

The verbal part of the SAT has a mean of 500 and a standard deviation of 100. If we randomly selected 1500 students who had taken the the verbal SAT how many would score lower than 250?

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Solution. If the verbal sat X has a mean of 500 and a standard deviation of 100, then the probability that the score is lower than 250 is
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Solution Summary

This solution discusses the calculations of scores based on mean and standard deviation.

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