document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1085058>Question 1085058</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A poll was conducted that asked 1014 people how many books they had read in the past year. Results indicated that  x(overbar)=13.1 books and s=16.6 <BR>\n" );
document.write( "books. <BR>\n" );
document.write( "A. Construct a 95&#8203;% confidence interval for the mean number of books people read.<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #699162 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=699162\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The interval is 13.1+/- z*s/sqrt(n).  I use z here, because n is so large that t approaches and is essentially = to z.<BR>\n" );
document.write( "+/- 1.96*16.6/sqrt (1024); that sqrt=32<BR>\n" );
document.write( "+/-1.017<BR>\n" );
document.write( "(12.1, 14.1) </SPAN>\n" );
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