12.2 and 12.3

• P(E) = # of outcomes favorable to E/ # possible outcomes
• P(E) = 0 means E will never occur.
• P(E) = 1 meas E will allways occur
• P(A) + P(not A) = 1
• P(not A) = 1 - P(A)
• Odds against E = P(not E) / P(E) = n/m , often expressed n to m or n:m
• Odds in favor of E = P(E) / P(not E)

Homework

• Page 738, 13 to 77 odd
• Page 745, 9 to 57 odd