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Posted by on Monday, October 5, 2009 at 2:52pm.

given a jar contains four marbles, each a different color: red, blue, green, and yellow. If you draw two marbles from the jar, one after another, replacing the first before drawing the second,what is the probability of getting a red marble on the first draw and a green marble on the second draw?

  • Math - , Monday, October 5, 2009 at 3:40pm

    Since there is replacement of the marbles, the two draws are independent. The joint probability of two independent events is the product of the individual probabilities.
    P(R)=1/4
    P(G)=1/4
    P(R∩G)=(1/4)(1/4)=1/16

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