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Probability

Probability. 8.11 (A) – You will be expected to be able to find the probabilities of dependent and independent events. Essential Questions. What’s the difference between theoretical and experimental probability? How can you determine when compound events are independent and dependent?.

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Probability

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  1. Probability 8.11 (A) – You will be expected to be able to find the probabilities of dependent and independent events.

  2. Essential Questions • What’s the difference between theoretical and experimental probability? • How can you determine when compound events are independent and dependent?

  3. What do you know about probability? • Probability is a number from 0 to 1 that tells you how likely something is to happen. • Probability can have two approaches -experimental probability -theoretical probability

  4. Theoretical vs. Experimental Theoretical Probability Experimental Probability The ratio of the number of times the event occurs to the total number of trials. P(E)= # of times event occurs Total # of outcomes • The likelihood that something will happen. P(T) = #of favorable outcomes Total # of outcomes

  5. Compound Events How does this affect probability? • Compound probability is the probability that two or more events occur. • First, you must determine if the events are independent or dependent. • What is the probability of rolling an even number on the first dice and rolling a 3on the second dice? (ind. or dep.? Find probability)

  6. Dependent vs. Independent Probability # of favorable___________# of possible Multiplication of two ratios More than one event

  7. Complete notes and activity

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