document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=460846>Question 460846</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The length of human pregnancies from conception to birth varies according to a distribution that is approximately Normal with mean 272 days and standard deviation 16 days. 95% of all pregnancies last between </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #316139 by </B><A HREF=/tutors/aboutme.mpl?userid=edjones><B>edjones(8007)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=edjones><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=edjones><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=316139\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 1.96 and -1.96 are the 95% bounds.<BR>\n" );
document.write( "(x-272)/16=-1.96<BR>\n" );
document.write( "x-272=-31.36<BR>\n" );
document.write( "x=240.6<BR>\n" );
document.write( ".<BR>\n" );
document.write( "(x-272)/16=1.96<BR>\n" );
document.write( "x-272=31.96<BR>\n" );
document.write( "x=304<BR>\n" );
document.write( ".<BR>\n" );
document.write( "Between 240.6 and 304 days<BR>\n" );
document.write( ".<BR>\n" );
document.write( "Ed </SPAN>\n" );
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