document.write( "Question 262131: in a multiple choice test the probability of getting the correct answer by guessing alone is 20%. what are the odds against getting the correct answer by pure guessing? \n" ); document.write( "
Algebra.Com's Answer #193273 by stanbon(75887)\"\" \"About 
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in a multiple choice test the probability of getting the correct answer by guessing alone is 20%. what are the odds against getting the correct answer by pure guessing?
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\n" ); document.write( "Formula: Odds against = P(against)/P(for)
\n" ); document.write( "Your Problem:
\n" ); document.write( "P(correct) = 0.2
\n" ); document.write( "P(incorrect) = 0.8
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\n" ); document.write( "Odds against = 0.8/0.2 = 4:1
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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