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Date 1 Page No. e x The combine mean and variance of the salary of 250 workers of City B are 560 and 5497 rexpectively. The medn and the variance of the salary of too workers of city in die 650 and 121 respectively find the variance of the salary in city B.
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Date 1 Page No. e x The combine mean and variance of the salary of 250 workers of City B are 560 and...