Suppose you have an urn containing 7 red and 3 blue balls. You draw three balls at random. On each draw, if the ball is red, you set it aside and if the ball is blue you put it back in the urn. What is the probability that the third draw is blue? (If you get a blue ball it counts as a draw even though you put it back in the urn).
Suppose you have an urn containing 7 red and 3 blue balls. You draw three balls at random. On each draw, if the ball is red, you set it aside and if the ball is blue you put it back in the urn. What is the probability that the third draw is blue? (If you get a blue ball it counts as a draw even though you put it back in the urn).
Chapter8: Sequences, Series,and Probability
Section8.7: Probability
Problem 7ECP: You draw one card at random from a standard deck of 52 playing cards. What is the probability that...
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Suppose you have an urn containing 7 red and 3 blue balls. You draw three balls at random. On each draw, if the ball is red, you set it aside and if the ball is blue you put it back in the urn. What is the
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