Presentation on theme: "3-10-14 Discuss With A Neighbor Look at the spinners below: If you spin each spinner one time, what is the probability that you will land on an odd number."— Presentation transcript:
3-10-14 Discuss With A Neighbor Look at the spinners below: If you spin each spinner one time, what is the probability that you will land on an odd number and the letter B?
Dependent Events Essential Question: How are dependent and independent probabilities used?
So what makes dependent events different than independent events? Unlike with independent events, the outcome of one event DOES affect the outcome of the other! Independent: P(A&B) = P(A) x P(B) DEPENDENT: P(A&B) = P(A) x P(B after A)
Let’s see what this looks like… A deck of cards has 8 orange, 4 pink, and 6 green cards. You pick a card from the deck, do NOT replace it, and then pick another card. What is the probability of selecting an orange card and then a pink card?
Now you try one! There are 5 blue marbles, 4 red marbles and 6 purple marbles in a bag. If you pull out a marble and do NOT replace it, what is the probability that you pull out a red marble and then another red marble?
Tell your partner how you would solve this problem: A bag contains 9 blue marbles and 3 red marbles. What is the probability that without replacing the marbles, you pull out two red marbles in a row?