1. M

    Exponential Distribution and Coincidences ?

    Hello, I have two sets of n0 events each generated independently by an exponential distribution with characteristic time tau (dn/dt = n0/tau exp(-t/tau)). What is the probability that there will be no coincidences between the two sets, ie no time window of duration T with at least one event...
  2. C

    Birthday coincidences

    Only a gathering of 23 people are needed to to make the probability of two of them having the same birthday greater than 50%. This is a well known and surprising result. In deriving the expression for probability of birthday coincidence in a group of n people, the approach seems always to...