1. P4. Probability Essential Question: How is an independent event defined?

2. Activation How are these two situations different: There are 5 marbles in a bag what is the probability of getting a red one on the second try if three are red and 2 are blue if you choose a marble and replace it? There are 5 marbles in a bag what is the probability of getting a red one on the second try if three are red and 2 are blue if you choose a marble but keep it out?

3. P4. Probability Independence: When the outcome of one event does not impact the outcome of another event.

4. Probability If all outcomes are successful, the probability will be 1 If no outcomes are successful, the probability will be 0 So…Probability is 0 ≤ P ≤ 1

5. Examples What is the probability of getting an ace from a deck of 52 cards? What is the probability of rolling a 3 on a 6 sided die?

6. More Examples What is the probability of rolling an even number?

7. More Examples What is the probability of getting a total of 5 when a red die and green die is rolled? +123456 1234567 2345678 3456789 45678910 56789 11 6789101112

8. More Examples What is the probability of getting 2 spades when 2 cards are dealt at the same time?

9. Home Work Worksheet 4