document.write( "Question 1133596: in a true or false assignment of six questions you are obliged to get at least four correct to pass. If you guess answers to the questions, what are the probabilities that:\r
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document.write( "a) you pass
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document.write( "b) you get at least 50% of the answers correct
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document.write( "c) you get no more than 2 correct \n" );
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Algebra.Com's Answer #750850 by Boreal(15235)![]() ![]() You can put this solution on YOUR website! binomial expansion for 6 \n" ); document.write( "1 6 15 20 15 6 1 \n" ); document.write( "0 1 2 3 4 5 6 correct \n" ); document.write( "four or more is 22/64 \n" ); document.write( "at least 50% is 42/64 \n" ); document.write( "no more than 2 correct is 22/64 \n" ); document.write( " |