The Normal Distribution: Exercise #2

Objective: Compute normal probabilities and quantiles and visualize these values in normal probability and cumulative distributions.

Problem Description: The annual rainfall in a certain area is normally distributed with a mean of 25 inches and a standard deviation of 5 inches. The following questions ask you to compute probabilities and quantiles from a normal distribution.

The following normal Java applet displays the probabilities of a normal random variable, X, with a mean of 25 in and a standard deviation of 5 in. Use this applet to answer the questions below.