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Mean, Standard Deviation, and Normal Distribution

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If the mean exam score in a class of 30 students is an 80 out of 100 and the standard deviation on the exam is 15, what percentage of students earned between 65 and 95, assuming a normal distribution of grades on the exam? How alarmed should a student with a score of 49 be with his grade?

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Solution Summary

This solution deals with questions related to the normal distribution, mean, and standard deviation of a problem.

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