True or False Sequences are sometimes defined recursively.

Probability (Chapter 3) Rules: 1. All outcomes must lie between 0 and 1 2. The sum of all the outcomes in a sample space must equal 1 P(Event) = X/Y X number of outcomes in the event Y total number of outcomes in sample space Sections 3.2 – 3.4 • Union o Outcomes are either in one event or the other (in either A OR B) o A U B o Use Additive Rule to find union: ▪ P(A U B) = P(A) + P(B) – P(A ∩ B) • Intersection o Outcomes are in 2 events (in both A AND B) o A ∩ B • Complementary Events o For event A, it’s all the events that A does not occur in o Ac o Rule: P(A) + P(A ) = 1 • Mutually Exclusive events o Events