For the standard normal probability distribution, the area to the left of the mean is _____.
A) -.5
B) 0.5
C) any value between 0 and 1
D) 1

Question

Quizplus · Accepted Answer

For any normal distribution, the mean is always in the center and exactly half of the area is on each side of the mean. Since the area under a probability distribution must add up to 1, the area to the left of the mean is always 0.5 or 50%.

For the Standard Normal Probability Distribution, the Area to the Left