document.write( "Question 184791This question is from textbook
\n" ); document.write( ": An aptitude test has a mean of 220 and standard deviation of 10. find the corresponding z score for: a) a test score of 232 b) a test score of 212 \r
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Algebra.Com's Answer #138679 by Edwin McCravy(20059)\"\" \"About 
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An aptitude test has a mean of 220 and standard deviation of 10. find the corresponding z score for: a) a test score of 232 b) a test score of 212
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document.write( "The formula for a z-score for a test score of x\r\n" );
document.write( "with mean \"mu\" and standard deviation \"sigma\"\r\n" );
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document.write( "\"z=%28x-mu%29%2Fsigma\"\r\n" );
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document.write( "So for\r\n" );
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\n" ); document.write( "a) a test score of 232
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document.write( "\"z=%28x-mu%29%2Fsigma\"\r\n" );
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document.write( "\"z=%28232-220%29%2F10\"\r\n" );
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document.write( "\"z=%2812%29%2F10\"\r\n" );
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document.write( "\"z=1.2\"\r\n" );
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document.write( "and for\r\n" );
document.write( "

\n" ); document.write( "b) a test score of 212
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document.write( "\"z=%28x-mu%29%2Fsigma\"\r\n" );
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document.write( "\"z=%28212-220%29%2F10\"\r\n" );
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document.write( "\"z=%28-8%29%2F10\"\r\n" );
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document.write( "\"z=-.8\"\r\n" );
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document.write( "Edwin
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