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Thread: Simple Bernoulli trial: prob of pipe failure during inspection

  1. #11
    Quote Originally Posted by tkhunny View Post
    Well, that was a Binomial Approximation. Is there a distribution that you feel might be more appropriate? Poisson? Beta? Weibull?
    We haven't covered Poisson, Beta or Weibull in our syllabus yet; but I don't know whether the method you're using is the correct one as it is different from the approximation you suggested.

  2. #12
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    The only thing we didn't think about very much was the 23. We counted n = number of inspections. I began to wonder if we have a finite number of pipes and we should be counting n = number of pipes.

    Since we correctly calculated the mean, let's try n*p = 9/23 again.

    Since we can have as many inspections as desired, that may be considered infinite - quite inappropriate for the Binomial Distribution.
    Since there are only six pipes, I guess, things should work out.
    "Unique Answers Don't Care How You Find Them." - Many may have said it, but I hear it most from me.

  3. #13
    Quote Originally Posted by tkhunny View Post
    The only thing we didn't think about very much was the 23. We counted n = number of inspections. I began to wonder if we have a finite number of pipes and we should be counting n = number of pipes.

    Since we correctly calculated the mean, let's try n*p = 9/23 again.

    Since we can have as many inspections as desired, that may be considered infinite - quite inappropriate for the Binomial Distribution.
    Since there are only six pipes, I guess, things should work out.
    Many thanks for yout help

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