document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=321760>Question 321760</A>: <I><SPAN STYLE=\"word-break: break-all;\"> construct the confidence interval for the population mean C=90, X= 15.1, S = 8.0, N= 40 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #230363 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=230363\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> construct the confidence interval for the population mean <BR>\n" );
document.write( "C=90, X= 15.1, S = 8.0, N= 40<BR>\n" );
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document.write( "x-bar = 15.1<BR>\n" );
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document.write( "E = t*s/sqrt(n)<BR>\n" );
document.write( "E = invT(0.95 with df = 39)*8/sqrt(40) = 1.6849*(1.2649) = 2.1312<BR>\n" );
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document.write( "90% CI: 15.1-2.1312 < u < 15.1+2.1312<BR>\n" );
document.write( "========================================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( "=========== </SPAN>\n" );
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