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The mean of 10 observations is 5.5 . If each observation is multiplied by 4 and subtracted from 44 , then what is the new mean?

Options

  1. A20
  2. B22
  3. C34
  4. D44

Correct answer

B. 22

Step-by-step solution

It is given that mean of 10 observations are 5.5 x =5.5 Now, each observation is multiplied by 4 and subtracted from 44 . Then New mean aligned & y =44-4 x =44-4 5.5 & y =22 aligned

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