[justify]A probabilidade condicional relaciona as probabilidades entre eventos de um espaço amostral equiprovável. Nestas circunstâncias, a ocorrência do evento A, depende ou, está condicionada a ocorrência do evento B.[br]A probabilidade do evento A dado o evento B é definida por:[br][br][img width=223,height=39]data:image/png;base64,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[/img][br][br]Onde o evento B não pode ser vazio.[/justify]

[justify]Supomos que um avião com 140 passageiros saia de São Paulo com destino à Bahia. Durante esse voo, os passageiros responderam duas questões (eventos):[br][br][/justify][list=1][*]Já viajou de avião antes? (primeiro evento)[/*][*]Já esteve na Bahia? (segundo evento)[/*][/list][br]

[justify]A partir disso, um passageiro que viaja pela primeira vez de avião é escolhido. Nesse caso, qual seria a probabilidade desse mesmo passageiro já conhecer a Bahia?[br][br]n(viajando de avião pela primeira vez) = 105[br]n(viajando de avião pela primeira vez e já conhecer a Bahia) = 20[br][br]Note que esse número corresponde à probabilidade do passageiro escolhido já conhecer a Bahia, enquanto viajava de avião pela primeira vez. Assim, segundo a tabela acima podemos concluir que:[br][br][/justify][list][*]20 é o número de passageiros que já estiveram na Bahia E estão viajando a primeira vez de avião;[/*][*]105 é o número total dos passageiros que já viajaram de avião.[/*][*][br][/*][/list]A probabilidade condicional é indicada por: [br][br][img width=479,height=64]data:image/png;base64,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[/img][br]Perceba que o conector E tem o significado de interseção.[br][br]Assim, temos que os eventos A e B de um espaço amostral finito e não vazio (Ω) podem ser expressos por:[br][center][br][math]P\left(A\mid B\right)=\frac{n\left(A\cap B\right)}{n\left(B\right)}[/math][/center]