Answered

Every 15 minutes an express train arrives and waits 4 minutes to pick up passengers. Four minutes after the express train leaves, a local train arrives and waits 3 minutes to pick up passengers. If a passenger arrives at the station at a random time during the rush period, find the probability of each of the following.

  1. The express train will be waiting at the station.
  2. No train will be waiting at the station.

I think that the probability is out of 15, but I have other people telling me it's out of 26. Which is right?

Verified Answer :

Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions.

  express waits .. no train ... local waits ... no train 
01 02 03 04 // 05 06 07 08 // 09 10 11 // 12 13 14 15 // next cycle 

from the diagram, it should be evident that 
(a) Pr =4/15 
(b) Pr =8/15 

Related Questions