document.write( "Question 663816: For a population with σ = 10, a score that is located 20 points above the mean would have a z-score of? \n" ); document.write( "
Algebra.Com's Answer #413003 by jim_thompson5910(35256)\"\" \"About 
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z = (x-mu)/sigma\r
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\n" ); document.write( "\n" ); document.write( "z = ((20+mu)-mu)/10\r
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\n" ); document.write( "\n" ); document.write( "z = (20+mu-mu)/10\r
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\n" ); document.write( "\n" ); document.write( "z = (20)/10\r
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\n" ); document.write( "\n" ); document.write( "z = 2\r
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