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Statistiques II

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Probabilités Exercices Lois de probabilités discrètes<br />

Principe de Bayes (2 versions)<br />

P(A|B) =<br />

P(Ai|Bj) =<br />

pour tout i et j.<br />

P(A ∩ B)<br />

P(B) =<br />

P(B|A) P(A)<br />

P(B|A) P(A) + P(B|A) P(A)<br />

P(Bj|Ai) P(Ai)<br />

k m=1 P(Bj|Am) P(Am)<br />

A. Caboussat, HEG STAT <strong>II</strong>, 2011 4 / 29

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