A2 Stats Chapter 2: Conditional Probability

2 flashcards · Mathematics · by TheoTyson

1. What does P(B∣A)\text{P}(B|A)P(B∣A) mean?

   The probability that B occurs given that A has already occurred.

2. What is P(A)\text{P} (A)P(A) equal to for independent events?

   P(A∣B)=P(A∣B′)=P(A)\text{P} (A | B) = \text{P} (A | B^\prime) = \text{P} (A)P(A∣B)=P(A∣B′)=P(A)