If random samples,each with n = 9 scores,are selected from a normal population with µ = 80 and σ = 36,then what is the expected value of the mean of the distribution of sample means?
A)4
B)12
C)16
D)80

Question

If random samples,each with n = 9 scores,are selected from a normal population with µ = 80 and σ = 36,then what is the expected value of the mean of the distribution of sample means?​
A)4​
B)​12
C)​16
D)​80

Quizplus · Accepted Answer

The expected value of the mean of the distribution of sample means is equal to the population mean, which is 80. This is because the sample means will tend to cluster around the population mean due to the central limit theorem. Therefore, the best choice is D.

If Random Samples,each with N = 9 Scores,are Selected from a Normal