On 09/27/2011 03:15 PM, Hans W. Hofmann wrote:
> Hallo,
>
> how to calculate 6/49 Lotto distribution,
> pdf_hypergeometric?
Hallo,
(%i10) display2d:false$
(%i11) p: makelist(pdf_hypergeometric(x, 6, 43, 6), x, 0, 6);
(%o11) [435461/998844,68757/166474,44075/332948,8815/499422,645/665896,
43/2330636,1/13983816]
(%i12) apply("+", p);
(%o12) 1
> maxima help: what means x,n1,n2,n?
>
If you have n1 white balls and n2 red balls in an urn, and n balls is
the number of balls drawn from the urn, pdf_hypergeometric(x, n1, n2, n)
is the probability for event "x balls are white".
--
Mario