Suppose a ball is drawn at random from a box containing three white and three black
balls. After a ball is drawn, it is then replaced and another drawn. What is the
probability that of the first four balls drawn, exactly two are white?
1
Expert's answer
2020-06-04T18:45:28-0400
"Probability\\; of \\;getting\\; white\\; ball=\\frac{3}{6}=0.5\\\\\nP(X=2)=C_{2}^{4}(0.5)^{2}(0.5)^2=0.375"
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