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

A Population Has a Mean of 75 and a Standard