SOLUTION: Find the mean and standard deviation of a set of grades between 68 and 86. They are within 3 standard deviations of the mean if it is normally distributed.
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Question 612546: Find the mean and standard deviation of a set of grades between 68 and 86. They are within 3 standard deviations of the mean if it is normally distributed. Answer by solver91311(17077) (Show Source):
