document.write( "Question 1111711: A chimp is taking a multiple-choice test. Of course, the chimp can't read and is guessing for every question. If there are 4 choices for each question, and there are 84 questions on the test, How many questions can we expect the chimp to answer correctly? ( there is 25% chance that the chimp will guess correctly) \n" ); document.write( "
Algebra.Com's Answer #726799 by stanbon(75887) ![]() You can put this solution on YOUR website! A chimp is taking a multiple-choice test. Of course, the chimp can't read and is guessing for every question. If there are 4 choices for each question, and there are 84 questions on the test, How many questions can we expect the chimp to answer correctly? ( there is 25% chance that the chimp will guess correctly) \n" ); document.write( "----- \n" ); document.write( "Binomial Problem with n = 84 and p = 0.25 \n" ); document.write( "----- \n" ); document.write( "mean = np = 84(1/4) = 21 \n" ); document.write( "------------ \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( "-------------------- \n" ); document.write( " |