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Mathematics 12 Online
OpenStudy (anonymous):

The grades on the last history exam had a mean of 75%. Assume the population of grades on history exams is known to be normally distributed with a standard deviation of 7. What percent of students earn a score between 70% and 82%? 0.6285 0.6101 0.6024 0.5892 I think it's B is that right? @satellite73 @ParthKohli

OpenStudy (anonymous):

no it's C

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