document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1044404>Question 1044404</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Assume that adults have IQ scores that are normally distributed with a mean of <BR>\n" );
document.write( "105 <BR>\n" );
document.write( "and a standard deviation <BR>\n" );
document.write( "15. <BR>\n" );
document.write( "Find <BR>\n" );
document.write( "Upper P9&#8203;, <BR>\n" );
document.write( "which is the IQ score separating the bottom <BR>\n" );
document.write( "9&#8203;% <BR>\n" );
document.write( "from the top <BR>\n" );
document.write( "91&#8203;%. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #659681 by </B><A HREF=/tutors/aboutme.mpl?userid=Boreal><B>Boreal(15235)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Boreal><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/cgi-bin/show-face.mpl?user=Boreal><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=659681\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Need to have the z-value for 0.09 probability<BR>\n" );
document.write( "That is -1.34<BR>\n" );
document.write( "z=(x-mu)/sd<BR>\n" );
document.write( "-1.34=(x-105)/15<BR>\n" );
document.write( "-20.1=x-105<BR>\n" );
document.write( "x=84.9 or 85 </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );