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 Probability and Statistics Basic Probability and Statistics Math Forum

 May 30th, 2011, 03:46 AM #1 Newbie   Joined: Apr 2011 Posts: 8 Thanks: 0 probability function Hello, I've got the next question:If there are 3 balls and I put them in boxes in a random way,indepedenttly every one, considering the aleatory variable X= number balls on first box, which is the table of probability function X?? Thanks anyway May 30th, 2011, 12:26 PM #2 Global Moderator   Joined: May 2007 Posts: 6,835 Thanks: 733 Re: probability function The distribution is binomial, with p = prob. that ball is in first box (assume same for all balls), and n = 3. (q=1-p). (Pk = prob(X=k)). P0 = q^3 P1 = 3pq^2 P2 = 3p^2q P3 = p^3 You will have to specify p, which could depend on the number of boxes. June 4th, 2011, 05:05 PM #3 Senior Member   Joined: Apr 2007 Posts: 2,140 Thanks: 0 See this. Tags function, probability Thread Tools Show Printable Version Email this Page Display Modes Linear Mode Switch to Hybrid Mode Switch to Threaded Mode Similar Threads Thread Thread Starter Forum Replies Last Post neilduggan Advanced Statistics 1 October 17th, 2013 12:09 PM token22 Advanced Statistics 2 April 26th, 2012 03:28 PM mike688 Advanced Statistics 12 October 4th, 2011 09:28 AM naspek Calculus 1 December 15th, 2009 01:18 PM beasty Math Events 0 May 3rd, 2007 10:26 AM

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