Let A and B be independent events with P(A) = 1/4 and P(B) = 2/3. Compute (a) P(AB), (b) P(AB ), (c) P(A B ), (d) P[(A B) ], and (e) P(A B).

Conditional Probability: probability of an event, given that another event has occurred P(A| B) is the probability of A, given that B has occurred P(A| B) is not the same as P(B|A) If events are independent then P(A)=P(A|B) and P(B)=P(B|A) A contingency table (two way table) is a visual representation of the relationships between the variable. They make probabilities easier to figure out. Levels...