document.write( "Question 219915: 30% population of a village has a certain disease.If people in the village are selected successively at random, what is the probability that the 3th person selected is the first person with the disease? \n" ); document.write( "
Algebra.Com's Answer #165279 by stanbon(75887)\"\" \"About 
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30% population of a village has a certain disease.If people in the village are selected successively at random, what is the probability that the 3th person selected is the first person with the disease?
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\n" ); document.write( "P(3rd first diseased) = (0.7)^2(0.3) = 0.147
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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