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Notes 13-5: Conditional Probability

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Presentation on theme: "Notes 13-5: Conditional Probability"— Presentation transcript:

1 Notes 13-5: Conditional Probability

2 Example 1: A container holds 4 blue marbles and 5 red marbles
Example 1: A container holds 4 blue marbles and 5 red marbles. One marble is randomly drawn and discarded. Then a second marble is drawn. What is the probability that the second marble is red, given that the first was blue?

3 Example 2: A pair of number cubes is thrown
Example 2: A pair of number cubes is thrown. Find the probability that the numbers match given that their sum is greater than or equal to 9.

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