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( "
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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?
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\n" ); document.write( "Total points/# of quizzes = average score
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\n" ); document.write( "Jim has 10*79 = 790 points on 10 quizzes
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\n" ); document.write( "Jim needs 11*80 = 880 points on 11 quizzes to get a \"B\".
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\n" ); document.write( "Jim needs 880-790 = 90 points on his last quizz.
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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