1. Probability 6.4

2. Outcomes Possible results of an action Examples: – 6 outcomes for rolling a dice (1,2,3,4,56) – 2 outcomes for flipping a coin (heads or tails)

3. Event The outcome or group of outcomes

4. Probability of an Event

5. Find the probability of rolling one number cube P(odd number) P(2) P(5 or 6)

6. All Probabilities range from 0 to 1

7. Classic Probability Problems

8. Complement The opposite of that event Example: Rain and No Rain are complements Probability of Event + Complement=1

9. When you roll a number cube what is the P(not 2)? P(2) + P(not 2) =1

10. What is the complement of an impossible event? A certain event

11. Finding Odds ODDs in Favor of an EventODDs Against an Event

12. ODDS What are the odds that a quarter chosen at random from the five shows a horse? 1 to 4 What are the odds that it shows no horse? 4 to 1

13. ODDS Consider the event of randomly choosing a quarter that shows the outline of a state. What are the odds in favor of this event? 2 to 3 What are the odds against the event? 3 to 2

14. Homework Page 298 (2-30 even and 31)