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Show all the work 9. The monthly income of 5,000 workers at the Microsoft plant are distributed normally. Suppose the mean monthly income is $1,250

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9. The monthly income of 5,000 workers at the Microsoft plant are distributed normally. Suppose the mean monthly income is $1,250 and the standard deviation is $250. a) 16% of workers earn more than how much per month? b) How many workers earn less than $750 per month? c) What percentage of the workers earn between $750 and $1500 per month? 4,050

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