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Independent and Dependent Events: Understanding Probability

Learn about independent and dependent events and how they affect the probability of outcomes. Explore examples and calculations to master these concepts.

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Independent and Dependent Events: Understanding Probability

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  1. 9-7Independent and Dependent Events(pg. 398-401) Indicator: D7

  2. Compound event- 2 (or more) simple events • Independent events – The outcome of the first event does not effect the outcome of the next event. P(A&B)= P(A)•P(B) Example: P (rolling “5” and tails)=

  3. Dependent Events- the outcome of one of the events affects the outcomes of another event. P(A & B)=P(A)• P(B following A) Example: P (queen and 3)= or 0.6%

  4. You Try • Tossing 4 coins and getting heads on all four? • There are 10 country CD’s and 15 rock CD’s. What is the probability of drawing a rock then a country CD?

  5. Mutually Exclusive events: Can not happen at the same time P(A or B) = P(A) + P(B) P(2 or 3 on a dice)= or

  6. Homework • Period 3-->9- 7 page 400-401 #17-19 & 22-32 all

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