Given a distribution that follows a standard normal curve, what does the graph of the curve do as z increasesin the positive direction?
A) The graph of the curve approaches zero.
B) The graph of the curve approaches 1.
C) The graph of the curve approaches an inflection point.
D) The graph of the curve eventually intersects the horizontal axis.

Question

Quizplus · Accepted Answer

As z increases in the positive direction on a standard normal curve, the value of the curve (which represents the probability density) approaches zero. This is because the tails of the normal distribution curve extend infinitely in both directions but get closer to the horizontal axis without ever touching it, indicating that the probability of observing a value far from the mean decreases.

Given a Distribution That Follows a Standard Normal Curve, What