document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1196428>Question 1196428</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Composite scores on the ACT have an average of 20.6 and a variance of 36.\r<BR>\n" );
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document.write( "Calculate the z-score for a student with a composite ACT score of 25.1.  Round your answer to two decimal places. </SPAN>\n" );
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document.write( "mu = 20.6 = mean<BR>\n" );
document.write( "sigma = 6 = standard deviation\r<BR>\n" );
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document.write( "note: <BR>\n" );
document.write( "sigma = sqrt(variance) = sqrt(36) = 6\r<BR>\n" );
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document.write( "Let's compute the z score for x = 25.1<BR>\n" );
document.write( "z = (x - mu)/sigma<BR>\n" );
document.write( "z = (25.1 - 20.6)/6<BR>\n" );
document.write( "z = 4.5/6<BR>\n" );
document.write( "z = 0.75\r<BR>\n" );
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document.write( "Answer: 0.75<BR>\n" );
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