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I am having difficulty with the following problem: A store promises to give a small gift to every thirteenth customer to arrive. If the arrivals of customers form a Poisson process with rate $\lambda$, then:

  1. Find the probability density function of the times between the lucky arrivals;
  2. Find $P[M(t) = k ]$ for the number of gifts $M(t)$ given during the interval $[0, t]$
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    What do you know? What did you try? Where are you stuck?2012-05-24
  • 0
    my problem is the use of the condition given by the number 132012-05-24
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    ??? Please explain.2012-05-24

1 Answers 1