document.write( "Question 1134544: On an exam with a mean of M=98, you obtain a score of X=90. Would you prefer a standard deviation of s=2 or s=8?
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document.write( "how do I solve this? Thank you in advance!\r
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Algebra.Com's Answer #751965 by Boreal(15235)![]() ![]() You can put this solution on YOUR website! If I am above the mean, I want to be far above. If I am below, I don't want to be far below. \n" ); document.write( "z score is (x-mean)/sd \n" ); document.write( "so below the mean, use sd of 8 and one is -8/8 or -1 \n" ); document.write( "that is a lot better than sd of 2 and z score of -8/2 or -4 \n" ); document.write( "s=8 is the answer. \n" ); document.write( " |