If all the possible random samples with n = 36 scores are selected from a normal population with µ = 80 and σ = 18, and the mean is calculated for each sample, then what is the average of all the sample means?
A)2
B)6
C)80
D)cannot be determined without additional information

Question

Quizplus · Accepted Answer

The average of all the sample means (the expected value of the sample mean) is equal to the population mean, which is 80 in this case.

If All the Possible Random Samples with N = 36