document.write( "Question 1031582: The mean and standard deviation of 500 students who took a statistics final were 72 and 8, respectively. The grades have a mound-shape distribution. Based upon this information, the best estimate of the percentage of students who scored higher than 80 on the exam is\r
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\n" ); document.write( "\n" ); document.write( " A 68%
\n" ); document.write( " B 32%
\n" ); document.write( " C 16%
\n" ); document.write( " D 5%
\n" ); document.write( " E 2.5%
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Algebra.Com's Answer #646925 by robertb(5830)\"\" \"About 
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C. 16%\r
\n" ); document.write( "\n" ); document.write( "Data within 1 standard dev comprise 68% by the empirical rule. Therefore the best estimate of the percentage of students who scored higher than 80 on the exam is
\n" ); document.write( "\"%28100+-+68%29%2F2+=+16\"%
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