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Maddie teaches a class in which grades on an exam are normally distributed with a mean of = 100 and = 10. For retention purposes,

Maddie teaches a class in which grades on an exam are normally distributed with a mean of = 100 and = 10. For retention purposes, Maddie is required to report the probability that a randomly selected score will have a value between X = 85 and X = 90. Which probability should Maddie include on her report

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