# Probability and mutual exclusivity

A survey of top executives revealed that 35 percent of them regularly read Time magazine, 20 percent read Newsweek, and 40 percent read U.S. News and World Report. Ten percent read both Time and U.S. News and World Report. What is the probability that a particular top executive reads either Time or U.S. News and World Report regularly? What is the probability .10 called? Are the events mutually exclusive? Explain.

A study by the National Park Service revealed that 50 percent of vacationers going to the Rocky Mountain region visit Yellowstone Park, 40 percent visit the Tetons, and 35 percent visit both. What is the probability a vacationer will visit at least one of these attractions? What is the probability .35 called? Are the events mutually exclusive? Explain.

A normal distribution has a mean of 50 and a standard deviation of 4. Compute the probability of a value between 44.0 and 55.0. Compute the probability of a value greater than 55.0. Compute the probability of a value between 52.0 and 55.0.

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#### Solution Summary

This solution solves for probability and determines if events are mutually exclusive.