A population has a mean of 75 and a standard deviation of 8. A random sample of 800 is selected. The expected value of is
A)8
B)75
C)800
D)None of these alternatives is correct.

Question

A population has a mean of 75 and a standard deviation of 8. A random sample of 800 is selected. The expected value of   is
A)8 
B)75 
C)800 
D)None of these alternatives is correct.

Quizplus · Accepted Answer

The expected value of a sample mean is equal to the population mean. Therefore, the expected value of the sample mean in this case is 75, which is the population mean.

A Population Has a Mean of 75 and a Standard