document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1183120>Question 1183120</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A statistics practitioner calculated the mean and the standard deviation from a sample of 51 observations. The sample mean= 120 and sample standard deviation= 15. To estimate the population mean with 90% confidence, the interval would have the lower and upper limits as: </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #813292 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=813292\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> half-interval for a 90% CI t-dist would be t (0.95, df=50)*s/sqrt(n)<BR>\n" );
document.write( "=1.676*15/sqrt(51)=3.52<BR>\n" );
document.write( "CI=(116.48, 123.52)<BR>\n" );
document.write( " </SPAN>\n" );
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