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Conceptos de Probabilidad

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Questions and Answers

¿Cuál es la probabilidad del complementario de un evento A?

Prob [Ā] = Prob [A] / 2

Prob [Ā] = 1 - Prob [A] (correct)

Prob [Ā] = 1 + Prob [A]

Prob [Ā] = Prob [A] - 1

¿Qué expresa la probabilidad de la unión de A y B?

Prob [A U B] = Prob [A] + Prob [B] + Prob [A ∩ B]

Prob [A U B] = Prob [A] + Prob [B] - Prob [A ∩ B] (correct)

Prob [A U B] = Prob [A] - Prob [B] - Prob [A ∩ B]

Prob [A U B] = Prob [A] * Prob [B] * Prob [A ∩ B]

¿Cuál es la probabilidad del suceso vacío?

Prob [O] = 0,5

Prob [O] = 1

Prob [O] = 0 (correct)

Prob [O] = 1/2

Si A contiene a B, ¿qué se puede afirmar sobre sus probabilidades?

Prob [A] ≤ Prob [B] Signup and view all the answers

¿Cuál es el valor máximo de la probabilidad de un evento A?

Prob [A] = 1 Signup and view all the answers

¿Qué es la probabilidad condicionada?

Es la probabilidad de que un evento A ocurra después de que otro evento B ya ha ocurrido. Signup and view all the answers

¿Cómo se calcula P(A ∩ B) a partir de P(A) y P(B/A)?

P(A ∩ B) = P(A) * P(B/A) Signup and view all the answers

Si P(A) = 0,2 y P(B/A) = 0,3, ¿cuál es el valor de P(A ∩ B)?

P(A ∩ B) = 0,06 Signup and view all the answers

¿Qué expresa P(A/B) en términos de P(A ∩ B) y P(B)?

P(A/B) = P(A ∩ B) / P(B) Signup and view all the answers

¿Cuál es la relación entre P(A/B) y P(B/A) en términos de sus probabilidades?

P(A/B) * P(B) = P(B/A) * P(A) Signup and view all the answers