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In a large section of statistics class the points for the final exam are normally distributed with a mean of 69 and a standard deviation
In a large section of statistics class the points for the final exam are normally distributed with a mean of 69 and a standard deviation of 7 are assigned such that the top 10% receive A while the next 20% receives B the middle 40% receives C the next 20% receive D the bottom 10% receives F . Find
the lowest scores on final exams for A,B,C, D round up to nearest interference
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