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Statistics

1) A bag contains different colored balls; 7 yellow, 3 red, and 6 green. I randomly select one ball, note its color, put it back in the bag, and select another ball. What is the probability that both balls are green, P(GG)?
A).775

B).15

C).75

D).1406

2) A bag contains different colored balls; 7 yellow, 3 red, and 6 green. I randomly select one ball, note its color, put it back in the bag, and select another ball. What is the probability that both balls are yellow, P(YY)?
A).875

B).2042

C).9042

D).1914

3) A bag contains different colored balls; 7 yellow, 3 red, and 6 green. I randomly select one ball, note its color, leave it out of the bag, and select another ball. What is the probability that the first ball is red and the second is yellow, P(RY)?
A).082

B).0857

C).0375

D).6542

4) A bag contains different colored balls; 7 yellow, 3 red, and 6 green. I randomly select one ball, note its color, leave it out of the bag, and select another ball. What is the probability that the first ball is red and the second is green, P(RG)?
A).0703

B).075

C).5875

D).0857

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Timbs

  1. #1. 16 balls, 6 green, so P(GG) = 6/16 * 6/16 = 9/64 = 0.1406

    what do you get on the others?

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    oobleck

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