document.write( "Question 1078571: A quiz of 4 multiple choice questions, each with 3 choices, was given. A student needs either 3 or 4 right to pass the quiz, but is totally clueless. What is his probability of passing by pure guesswork? \n" ); document.write( "
Algebra.Com's Answer #693027 by stanbon(75887) ![]() You can put this solution on YOUR website! A quiz of 4 multiple choice questions, each with 3 choices, was given. A student needs either 3 or 4 right to pass the quiz, but is totally clueless. What is his probability of passing by pure guesswork? \n" ); document.write( "-------- \n" ); document.write( "Binomial Problem with n = 4 and p = 1/3 \n" ); document.write( "------------------ \n" ); document.write( "P(3<= x <=4) = 1 - binomcdf(4,1/3,2) = 0.1111 \n" ); document.write( "----------------- \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( "----------- \n" ); document.write( " |