document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1117731>Question 1117731</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Kori is analyzing a normal data distribution, but the data provided is incomplete. Kori knows that the mean of the data is 120, and that 84% of the data values are less than 130. Find the standard deviation for this data set. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #732848 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=732848\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Kori is analyzing a normal data distribution, but the data provided is incomplete. Kori knows that the mean of the data is 120, and that 84% of the data values are less than 130. Find the standard deviation for this data set. <BR>\n" );
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document.write( "z = (x-u)/sigma<BR>\n" );
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document.write( "Find the z-value.<BR>\n" );
document.write( "z = invNorm(0.84) = 0.9945<BR>\n" );
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document.write( "Equation:<BR>\n" );
document.write( "0.9945 = (130-124)/s<BR>\n" );
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document.write( "std = 6/0.9945 = 6.0334<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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