document.write( "Question 670901: Assume that on a standardized test of 100 questions, a person has a probability of 85% of answering any particular question correctly. Find the probability of answering between 74 and 84 questions, inclusive, correctly. \n" ); document.write( "
Algebra.Com's Answer #417209 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! Assume that on a standardized test of 100 questions, a person has a probability of 85% of answering any particular question correctly. Find the probability of answering between 74 and 84 questions, inclusive, correctly. \n" ); document.write( "------ \n" ); document.write( "Binomial Problem with n = 100 and p(correct) = 0.85 \n" ); document.write( "----- \n" ); document.write( "P(74 <= x <= 84) = binomcdf(100,0.85,84)-binomcdf(100,0.85,73) = 0.4303 \n" ); document.write( "=================== \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " |