document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1165835>Question 1165835</A>: <I><SPAN STYLE=\"word-break: break-all;\"> construct the indicated confidence interval for the population mean <BR>\n" );
document.write( "μ using the t-distribution. Assume the population is normally distributed.<BR>\n" );
document.write( "c=0.90, <BR>\n" );
document.write( "x=12.51 <BR>\n" );
document.write( " s=4.0, <BR>\n" );
document.write( " n=9<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 #790325 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=790325\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> half-interval is t0.95, df=8*s/sqrt (n)<BR>\n" );
document.write( "t=1.860<BR>\n" );
document.write( "so the half-interval is 1.860*4/sqrt(9)=2.48<BR>\n" );
document.write( "the interval is added to and subtracted form the sample mean<BR>\n" );
document.write( "(10.03, 14.99)<BR>\n" );
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