On Mon, 5 Dec 2016, Riccardo (Jack) Lucchetti wrote:
The only problem is that the elements of "White" are not
independent, since
their sum MUST equal 5 * 605, so that complicates things a little.
And that precisely why the hypergeometric distribution arises. However,
with n as large as 69, the difference between a hypergeometric and a
binomial (and hence a Gaussian, for large N) should be barely noticeable.
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Riccardo (Jack) Lucchetti
Dipartimento di Scienze Economiche e Sociali (DiSES)
Università Politecnica delle Marche
(formerly known as Università di Ancona)
r.lucchetti(a)univpm.it
http://www2.econ.univpm.it/servizi/hpp/lucchetti
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