document.write( "Question 1033561: A test consists of 10 multiple choice questions with five choices for each question. As an experiment,
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document.write( "you GUESS on each and every answer without even reading the questions.
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document.write( "What is the probability of getting exactly 7 questions correct on this test? \n" );
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Algebra.Com's Answer #648188 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! A test consists of 10 multiple choice questions with five choices for each question. As an experiment, \n" ); document.write( "you GUESS on each and every answer without even reading the questions. \n" ); document.write( "What is the probability of getting exactly 7 questions correct on this test? \n" ); document.write( "------ \n" ); document.write( "Binomial Problem with n = 10 and p(correct) = 1/5 \n" ); document.write( "------------------- \n" ); document.write( "P(x = 7) = 10C7*(1/5)^7*(4/5)^3 = binompdf(10,1/5,7) = 0.000786.. \n" ); document.write( "----- \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( "-------------------- \n" ); document.write( " |