document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1162146>Question 1162146</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Students at Lake Mean PE class ran a 5K with a mean run time of 31 minutes and a standard deviation of 4 minutes. \r<BR>\n" );
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document.write( "Approximately __ % finished between 23 and 27 minutes. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #785911 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=785911\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> This is between 1 and 2 sd s to the left of the mean.<BR>\n" );
document.write( "empirically, it is half of the difference between 95 and 68, or about 13.5%<BR>\n" );
document.write( "it is 0.1359 or 13.6%\r<BR>\n" );
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document.write( "z=(x-mean)/sd </SPAN>\n" );
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