Union of Events

Def: Union of Events—the union of events A and B is the collection of all outcomes that belong either to A or to B or to both A and B.

· P(A or B) or .

· P(A or B) = P(A) + P(B) – P(A and B).

Examples (Power point slides—in handout packet).

Attribute Block Activity—Union of Events and Attribute Blocks

Twins, Etc.