Conditional Probabilities
	• conditional or posterior probabilities – probabilities with prior information (i.e. after evidence) • P(A|B) is the probability of A given that all we know is B. • P(Weather=Rainy|Month=April) • Is P(BÞA) equal to P(A|B)? • Product Rule: P(AÙB)  = P(A|B)P(B)