The probability of obtaining a random sample mean which is lower than the population mean is
A) 1.00
B) 0
C) .50
D) none of these, since a sample mean can never be lower than a population

Question

Quizplus · Accepted Answer

The probability of obtaining a random sample mean which is lower than the population mean is 0.50, assuming a normal distribution. This is because, in a normal distribution, there is a 50% chance that a randomly selected sample mean will fall below the population mean.

The Probability of Obtaining a Random Sample Mean Which Is