document.write( "Question 447317: To get a grade of B, a student must have a mean average of 80 of greater. Jim Condron has a mean average of 79 for 10 quizzes. He approaches his teacher and asks for a B, reasoning that he missed a B by only one point. What is wrong with Jim's reasoning? \n" ); document.write( "
Algebra.Com's Answer #307956 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! To get a grade of B, a student must have a mean average of 80 of greater. Jim Condron has a mean average of 79 for 10 quizzes. He approaches his teacher and asks for a B, reasoning that he missed a B by only one point. What is wrong with Jim's reasoning? \n" ); document.write( "---- \n" ); document.write( "Total points/# of quizzes = average score \n" ); document.write( "--- \n" ); document.write( "Jim has 10*79 = 790 points on 10 quizzes \n" ); document.write( "--- \n" ); document.write( "Jim needs 11*80 = 880 points on 11 quizzes to get a \"B\". \n" ); document.write( "--- \n" ); document.write( "Jim needs 880-790 = 90 points on his last quizz. \n" ); document.write( "================== \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " |