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Published byShawn Knight Modified over 8 years ago

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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?

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Dependent Events Essential Question: How are dependent and independent probabilities used?

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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)

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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?

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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?

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LET’S PLAY BUCKET OF LIES!!!!!

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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?

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