Question

Amtrack's Downeaster train leaves Biddeford, Maine, at 6:42 A.M., Mondays through Fridays. It arrives at Boston at 8:50 A.M. If the train breaks down, find the probability that it breaks down in the last 35 minutes of its run. Assume that the train breaks down at random times. (Enter your answer as a fraction.)

Answer 1

35/128

Explanation:

Total number of minutes train traveled from 6:42 to 8:50 = 2 hrs 8 minutes = 128 minutes

This would be a uniform distribution. \

Hence,

P(Train breaks down in last 35 minutes of its run)

= 35/128