document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1181117>Question 1181117</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A college has 500 students. A survey was carried out on 22 students chosen at random to find out the<BR>\n" );
document.write( "average number of siblings. The following data is obtained: 2, 1, 3, 2, 0, 1, 2, 4, 0, 1, 1, 0, 1, 3, 2, 0, 1,<BR>\n" );
document.write( "2, 2, 1, 0, 1 ; Find the 90% confidence interval for the mean number of sibling of the college students. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #811028 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=811028\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The mean is 1.36 and s=1.09<BR>\n" );
document.write( "90% half-interval is t(0.95, df=21)*s/sqrt(n)=1.717*1.09/sqrt(22)=0.399<BR>\n" );
document.write( "the 90% CI for the mean is (0.96, 1.76) </SPAN>\n" );
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