If we consider the simple random sampling process as an experiment, the sample mean is
A) always zero.
B) always smaller than the population mean.
C) a random variable.
D) exactly equal to the population mean.

Question

Quizplus · Accepted Answer

The sample mean is calculated from a random sample, and thus, it is a random variable. Options A and B are incorrect because the sample mean can take any value, and it is not necessarily zero or smaller than the population mean. Option D is not always true because the sample mean can be affected by sampling variability and may not be exactly equal to the population mean.

If We Consider the Simple Random Sampling Process as an Experiment