If the population mean is known to be 15,what would you conclude if you calculated a sample mean from this population to be 13?
A)an error has been made in calculating the sample mean
B)an error has been made in calculating the standard error of the mean
C)the sample mean is not representative of the population mean

Question

Quizplus · Accepted Answer

A sample mean of 13 is below the population mean of 15, which suggests that the sample may not be representative of the population, or that there may be some other factors affecting the sample mean. It is unlikely that an error in calculating either the sample mean or the standard error would result in such a large discrepancy from the known population mean.

If the Population Mean Is Known to Be 15,what Would