document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1103775>Question 1103775</A>: <I><SPAN STYLE=\"word-break: break-all;\"> In humans, the average length of a pregnancy is 266 days. Suppose that the distribution of pregnancy lengths can be modeled by a Normal Distribution with standard deviation of 10 days. About what percentage of mothers will deliver their baby within 1 week of their due date? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #718468 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=718468\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> z=(x-mean)/sd<BR>\n" );
document.write( "want a probability for z between -0.7 and +0.7.  This is 0.5161. </SPAN>\n" );
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