ST 5/14, Q. 2

lundi 29 décembre 2014

You are given the following information:

  • Buses arrive according to a Poisson process at a rate of 5 per hour.

  • Taxis arrive according to a Poisson process at a rate of 10 per hour.

  • The arrival of buses and taxis are independent.

  • You get a ride to work from either a bus or a taxi, whichever arrives first.


Calculate the probability that you will have to wait more than 10 minutes for a ride to work.



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Why is it that we have to look at the Poisson process with intensity 5 + 10 = 15 for this problem? A proof would be preferable, but I would really like a direct explanation motivating the sum of the intensities.





ST 5/14, Q. 2

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