urn

  1. G

    Generalization of urn problem

    While simple urn problems - given x green and y black balls, whats the probability if we take 6 that 2 will be black etc. are easily solvable with hypergeometric and binomial distribution. Is there a distribution that solves it a general case for example: Given 1000 blue, 1200 green, 2000 red...
  2. A

    Probability question

    I need a probability question answering as soon as possible and i though this might be the place to come. There are 13 balls in a hat being randomly drawn out one at a time. There are 4 green balls, 2 red balls and 7 black balls. A selection of 8 balls are randomly drawn. What is the...
  3. R

    Probability distribution function for extracting b balls out of a urn.

    Hello everybody, First of all I would like to say that I am not a student trying to get his homework solved. Rather I am a software developer trying to implement a game that has a probabilistic side... In case it makes any difference :D. The abstraction of the problem is pretty simple and...