SOLUTION: After studying a couple's family history, a doctor determines that the probability of any child born to this couple having a gene for disease X is 1 out of 4. If the couple has th
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Question 1105973: After studying a couple's family history, a doctor determines that the probability of any child born to this couple having a gene for disease X is 1 out of 4. If the couple has three children, what is the probability that exactly two of the children have the gene for disease X?
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
P=(3C2)(1/4)^2*(3/4)^1
=3*(1/16)*(3/4)
=9/64
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