document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1056850>Question 1056850</A>: <I><SPAN STYLE=\"word-break: break-all;\"> <BR>\n" );
document.write( "1.	A group of 463 first-year college students were asked, “About how many hours do you study during a typical week?” The mean response is 15.3 hours. Assume that the study time is normally distributed with a population standard deviation of 8.5 hours. Construct a 99% confidence level interval for the mean study time of all first-year students.\r<BR>\n" );
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document.write( "Mean    Proportion<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 #671946 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=671946\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 99%CI width is z(0.995)*sd/sqrt(n)=2.576*8.5/sqrt(463)=1.02<BR>\n" );
document.write( "the interval is (7.48,9.52) </SPAN>\n" );
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