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Computer Server Down Probability

  1. Nov 17, 2016 #1
    • Moved from a technical forum, so homework template missing
    So the problem asks:

    A computer server runs smoothly for Exp(0.2) days and then takes Exp(0.5)days to fix. The server is running fine on Monday morning, t=0. Find the probability that the server was fixed at least once (i.e. at least one complete repair was done) in the next 7 days and the probability that the server was down on Friday t = 4 given that it was running next Sunday t = 6. (W are conditioning on the `future'. )

    So do I have to use Markov chain to do this problem? If so, do I need to find out the innitesimal generators to find the probability? I appreciate your insights!
     
  2. jcsd
  3. Nov 17, 2016 #2

    Ray Vickson

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    Science Advisor
    Homework Helper

    Try it and see for yourself. Of course, if you are studying Markov processes in the course, that would be a pretty strong hint.
     
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