document.write( "Question 1192115: After studying Mr X'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 Mr X has three children, what is the probability that exactly two of the children have the gene for disease X?
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Algebra.Com's Answer #824014 by ikleyn(52797)\"\" \"About 
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\n" ); document.write( "After studying Mr X's family history, a doctor determines that the probability of any child
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\n" ); document.write( "\n" ); document.write( "Standard binomial distribution problem.\r
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document.write( "    P = \"C%5B3%5D%5E2%2A%281%2F4%29%5E2%2A%281-1%2F4%29%5E1\" = \"3%2A%281%2F4%29%5E2%2A%283%2F4%29\" = 0.1406  (rounded).    ANSWER\r\n" );
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\n" ); document.write( "\n" ); document.write( "To see many other similar  (and different)  solved problems,  look into the lessons\r
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\n" ); document.write( "\n" ); document.write( "    - Typical binomial distribution probability problems \r
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