When a sample is selected at random from a population, which of the following will probably be the case?
A) The sample mean,, will likely be larger than the population mean.
B) The sample mean,, will likely be smaller than the population mean.
C) The sample mean,, will likely be different from the population mean.
D) The sample mean,, will likely be equal to the population mean.

Question

Quizplus · Accepted Answer

When a sample is selected at random, the sample mean is likely to differ from the population mean due to sampling variability, although it should be close if the sample is representative and large enough.

When a Sample Is Selected at Random from a Population