document.write( "Question 430490: A quiz consists of 5 true/false questions followed by 2 multiple choice questions with four possible answers. Suppose a student makes random guesses for all answers.
\n" ); document.write( "a) what is the probability that all answers are incorrect?
\n" ); document.write( "b)what is the probability that at least one answer in correct?
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Algebra.Com's Answer #298971 by ewatrrr(24785)\"\" \"About 
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\n" ); document.write( "Hi
\n" ); document.write( "A quiz consists of 5 true/false questions followed by
\n" ); document.write( "2 multiple choice questions with four possible answers.
\n" ); document.write( "Assuming only one of the four possible answers is correct for @ mulitple choice:
\n" ); document.write( "P(answering all incorrect) = (.5)^5*(.75)^2 = .0176
\n" ); document.write( "P(at least one correct) = 1 - P(none correct) = 1-.0176 = .9824 \n" ); document.write( "
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