Asked by rita

A sample of n = 7 scores has a mean of M = 5. After one new score is added to the sample, the new mean is found to be M = 6. What is the value of the new score? (Hint: Compare the values for ƩX before and after the score was added.
Answered by Kuai
Mean = sum/n

5 = sum/7

5(7) = 7(sum/7)

35 = sum

35 to 42

42-35 = 7
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