1. video WARM-uP Lesson 33 + brain break Exit card
Agenda
video
WARM-uP
Lesson 33 + brain break
Exit card

2. Warm-up
Simplify.

3. Lesson 33: finding the probability of independent and dependent events
Independent events Rolling a 6-sided die, then flipping a coin P(4 and H) = In general, P(A and B)=

4. Dependent events: A bag has 5 red marbles, 3 blue marbles and 2 green marbles. What is the probability of picking a red marble, not returning it to the bag. Then picking another red marble? P(A and B) =

5. Identify each set of events as dependent or independent
Tossing the same coin twice
Picking 2 students’ sticks without replacement

6. A bag has 5 ten-dollar bills and 15 one-dollar bills
Find the probability of drawing a one-dollar bill, keeping it, and then drawing a ten-dollar bill.
Find the probability of drawing a ten-dollar bill, keeping it, and then drawing another ten-dollar bill.

7. odds
Odds are another way of describing the likelihood of an event. Odds for: # 𝒐𝒇 𝒇𝒂𝒗𝒐𝒓𝒂𝒃𝒍𝒆 # 𝒐𝒇 𝒖𝒏𝒇𝒂𝒗𝒐𝒓𝒂𝒃𝒍𝒆 Odds against: # 𝒐𝒇 𝒖𝒏𝒇𝒂𝒗𝒐𝒓𝒂𝒃𝒍𝒆 # 𝒐𝒇 𝒇𝒂𝒗𝒐𝒓𝒂𝒃𝒍𝒆

8. What are the odds of spinning a 2
What are the odds of spinning a 2? What are the odds against spinning a blue less than 6?

9. The honor council has 3 boys and 3 girls
The honor council has 3 boys and 3 girls. The chess club has 7 boys and 3 girls. Each group will choose a member at random to be the president.
What is the probability that both presidents will be girls?
Both girls resign and a different pair of students is chosen What is the probability that both presidents will again be girls?