document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=464011>Question 464011</A>: <I><SPAN STYLE=\"word-break: break-all;\"> IQ scores are normally distributed with a mean of 100 and a standard deviation of 15. If a certain person has an IQ of 131, what percentage of the population has an IQ lower than hers? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #317829 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=317829\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> IQ scores are normally distributed with a mean of 100 and a standard deviation of 15. If a certain person has an IQ of 131, what percentage of the population has an IQ lower than hers?<BR>\n" );
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document.write( "z(131) = (131-100)/15 = 31/15 = 2.0667<BR>\n" );
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document.write( "P(x < 131) = P(z < 2.0667) = normaalcdf(-100,2.0667) = 98.06%<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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