document.write( "Question 1206898: The scores on a psychology exam were normally distributed with a mean of 52 and a standard deviation of 9. About what percentage of scores were less than 43? Use the 68-95-99.7 rule.
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\n" ); document.write( "The scores on a psychology exam were normally distributed with a mean of 52
\n" ); document.write( "and a standard deviation of 9. About what percentage of scores were less than 43?
\n" ); document.write( "Use the 68-95-99.7 rule.
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document.write( "Notice that in this problem the score of 43 is one standard deviation from the mean of 52.\r\n" );
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document.write( "So, using the empirical rule, the percentage of scores that are less than 43 is\r\n" );
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document.write( "     =  = 0.16,  or  16%.    ANSWER\r\n" );
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\n" ); document.write( "\n" ); document.write( "Solved.\r
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