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Incomes of a group of 1 0 0 0 0 employees were found to be normally distributed with a mean of Rs 1 5 2

Incomes of a group of 10000 employees were found to be normally distributed with a mean of Rs 1520 and a standard deviation of Rs 160. Find a) highest income of poorest 2000 employees b) lowest income of richest 1000 employees. (Ans: a 1385, b 1724.8)

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