Conditional Probability (Leaving Cert Mathematics): Flashcards

Probability of an event given another event already occurred

$P(A \mid B) = \frac{P(A \text{ and } B)}{P(B)}$

Probability of $A$ given $B$

$P(A \text{ and } B)$

$P(B)$

26 (13 Hearts and 13 Diamonds)

2

$\frac{1}{13}$