document.write( "Question 360957: a test consists of 100 true or false questions. If the students guesses on each question, what is the mean number of correct answer \n" ); document.write( "
Algebra.Com's Answer #257531 by Fombitz(32388)\"\" \"About 
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Each answer has a probability of p=0.5.
\n" ); document.write( "For a binomial distribution,
\n" ); document.write( "\"E%28X%29=np=100%280.5%29=50\"
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\n" ); document.write( "50 correct answers.\r
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