The average travel time to work for New York City residents is 36.5 minutes (Time Almanac, 2001). Suppose that the exponential probability distribution applies.
Which of the following functions is the probability density function for travel time to work?
What is the probability it will take a typical New Yorker between 20 and 40 minutes to travel to work (to 4 decimals)?
What is the probability it will take a typical New Yorker more than 40 minutes to travel to work (to 4 decimals)?