We continue to study probabilities with more than one events.

Two events, A and B, are said to be mutually exclusive if they cannot occur at the same time. In genenral, if A and B are two mutually exclusive events, then the probability of A or B occurring is: P(A or B) = P(A) + P(B).

Two events are said to be independent events if the occurrence or non-occurrence of one event does not affect the probability of the occurrence of the other event. In general, if A and B are independent events, the probability of both events A and B occurring is the product of their individual probabilities: P(A and B) = P(A) x P(B).

Homework:

Page 66, #9 – #18.