Math, asked by prasanna7ku, 8 months ago

For a group of 70 male workers, the mean and standard deviation of their daily wages are 26 and 5 respectively. For a group of 50 female workers, there are 38 and 9 respectively. what will be the variance of combined group of 20 workers?
67.33 , 72.67 , 83.33 , 91.67

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Answered by MetallicD

0

Answer:

can you explain it...........

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