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A crazy and lazy professor has developed a new grading system to make his life easier. he gives 10% A grades, 80% B grades, and 10% C grades. Last semester students with scores less than 15 received C's and those with scores above 85 received A's. If their scores are normally distributed, what are the mean and standard deviation of the scores?

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Category:- Statistics and Probability
Reference No.:- M91018864

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