document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1155869>Question 1155869</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Assume that a sample is used to estimate a population mean. Find the 90% confidence interval for a sample of size 34 with a mean of 42.8 and a standard deviation of 13.6. Enter your answer as a tri-linear inequality accurate to one decimal place (because the sample statistics are reported accurate to one decimal place.)  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #778561 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=778561\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> t 0.95 df=33=1.69<BR>\n" );
document.write( "half-interval is t*s/sqrt(n)<BR>\n" );
document.write( "=1.69*13.6/sqrt(34)<BR>\n" );
document.write( "=3.94<BR>\n" );
document.write( "this is the distance on either side of the mean, 42.8<BR>\n" );
document.write( "(38.9<x<46.7) </SPAN>\n" );
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