document.write( "Question 1082469: There are 5 questions on a multiple choice exam, each with five possible answers. If a student guesses on all five questions, what is the probability the student gets three questions correct? Express your answer as a percent rounded to the nearest tenth.\r
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document.write( "A) 16.9%
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document.write( "B) 5.1%
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document.write( "C) 20.5%
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document.write( "D) 8.7% \n" );
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Algebra.Com's Answer #696558 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! There are 5 questions on a multiple choice exam, each with five possible answers. If a student guesses on all five questions, what is the probability the student gets three questions correct? Express your answer as a percent rounded to the nearest tenth. \n" ); document.write( "Binomial Problem with n = 5 and p = 1/5 \n" ); document.write( "----- \n" ); document.write( "P(x=3) = 5C3*(1/5)^3*(4/5)^2 = binompdf(5,1/5,3) = 5.1% \n" ); document.write( "---------------- \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( "A) 16.9% \n" ); document.write( "B) 5.1% \n" ); document.write( "C) 20.5% \n" ); document.write( "D) 8.7% \n" ); document.write( " |