The Mean Travel Time to Work Is 25

question 118

Multiple Choice

The mean travel time to work is 25.2 minutes (U.S. Census) . 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 less than 20 minutes?

• A) 30.15%
• B) 33.97%
• C) 65.91%
• D) 69.85%

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Definitions:

PDLC

Stands for Polymer Dispersed Liquid Crystal, a technology used in smart glass that changes its opacity when an electrical current is applied.

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Human languages that have evolved naturally over time, as opposed to artificial or constructed languages.

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