1. Quelle est la formule de la probabilité conditionnelle de B sachant A ?
2. Quelle formule représente la probabilité conditionnelle de B sachant A ?
3. Que représente la relation $ P(B igcap A) = P_{CB}(A) imes P(A) $ ?
Probabilité conditionnelle — définition ?
$ P(B/A) = rac{P(B igcap A)}{P(A)} $
Probabilité conditionnelle — définition?
Probabilité de B sachant A.
Intersection — relation ?
$ P(B igcap A) = P_{CB}(A) imes P(A) $
Formule de P(B/A)?
$\frac{P(B \cap A)}{P(A)}$, $P(A)\neq 0$.
Exemple pratique — calcul $ P(G/R) $ ?
$ P(G/R) = 0,5 $
Relation intersection & conditionnelle?
$P(B \cap A) = P(B/A) \times P(A)$.
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