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Exhibit 6-5

Question 79
Multiple Choice

Exhibit 6-5.The mean travel time to work is 25.2 minutes (U.S.Census 2010).Further,suppose that commute time follows a log-normal distribution with a standard deviation of 10 minutes. Refer to Exhibit 6-5.What is the probability a randomly selected U.S.worker has a commute time of more than half an hour? A)25.78% B)31.56% C)68.44% D)74.22%

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Q 81
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