The Mean Travel Time to Work Is 25

question 66

Multiple Choice

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. 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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