Asked by Jen

A sample of 12 measurements has a mean of 34 and a standard deviation of 4.5. Suppose that the sample is enlarged to 14 measurements, by including two additional measurements having a common value of 34 each.

A. Find the mean of the sample of 14 measurements.

Mean =

B. Find the standard deviation of the sample of 14 measurements.

Standard Deviation =
Answered by PsyDAG
Since the two additional scores = the mean, the mean and the standard deviation will not change.
Answered by Anonymous
WRONG!
Answered by Anonymous
hey we had the same question on webwork, you get an answer? please help.
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