Probabilité conditionnelle et indépendance Flashcards

1
Q

PA(B) = ?

A

P(A∩B)/P(A)

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2
Q

Comment encadrer PA(B)

A

0≤PA(B)≤1

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3
Q

PA(B̅) = ?

A

1-PA(B)

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4
Q

P(A∩B) = ? (1)

A

P(A) x PA(B)

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5
Q

P(A∩B) = ? (2)

A

P(B) x PB(A)

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6
Q

Dans une situation d’équiprobabilité, PA(B) = ?

A

nombre d’éléments de B∩A / nombre d’éléments de A

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7
Q

A et B sont indépendants ⇐⇒ P(A∩B) = ?

A

P(A) x P(B)

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8
Q

A et B sont indépendants ⇐⇒ PB(A) = P(A) ⇐⇒ ?

A
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