document.write( "Question 369654: Enrollment statistics at a certain college show that 55% of all students are men, 18% of the student body consists of women majoring in business, and 40% of all students major in business. A student is selected at random.\r
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document.write( "Find the conditional probability that the person majors in business if we are certain the person is a woman.\r
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document.write( "I've got P(men) = 55 and P(women majoring in business) = 18, but the 40% I do not know what to do. I tried Venn diagram and:\r
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document.write( "P(M U W) = P(M) + P(W) - P(M n W) I still cannot get answer..\r
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Algebra.Com's Answer #263423 by jrfrunner(365)![]() ![]() You can put this solution on YOUR website! given \r \n" ); document.write( "\n" ); document.write( "P(Man)=0.55, P(Woman AND Business)=0.18, P(Business)=0.40 \n" ); document.write( "-- \n" ); document.write( "from this P(Woman)=1-P(man)=1-0.55=0.45 \n" ); document.write( "-- \n" ); document.write( "Using the probability rule P(A/B)=P(A and B)/P(B) \n" ); document.write( "Want \n" ); document.write( "P(Business given Woman)=P(Woman AND Business)/P(Woman)=0.18/0.45=0.40 \n" ); document.write( " |