document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=906208>Question 906208</A>: <I><SPAN STYLE=\"word-break: break-all;\"> a random sample of 88 observations produced a mean x = 25.8 and standard deviation s=2.7. Find 95%, 90% and 99% confidence interval for u\r<BR>\n" );
document.write( "\n" );
document.write( "I have been trying to figure out how to do this problem for hours but I keep getting stuck.  If someone can show me step by step it would help me alot.  Thank you so much. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #549682 by </B><A HREF=/tutors/aboutme.mpl?userid=ewatrrr><B>ewatrrr(24785)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ewatrrr><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=ewatrrr><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=549682\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> ME= 1.96(2.7/sqrt(88))<BR>\n" );
document.write( "CI:  25.8 - ME < <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=mu ALIGN=MIDDLE  ALT=\"mu\"   DISABLED_style= \"max-width:90%; height:auto;\" > < 25.8 + ME<BR>\n" );
document.write( "ME= 1.645(2.7/sqrt(88))<BR>\n" );
document.write( "CI:  25.8 - ME < <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=mu ALIGN=MIDDLE  ALT=\"mu\"   DISABLED_style= \"max-width:90%; height:auto;\" > < 25.8 + ME<BR>\n" );
document.write( "ME= 2.576(2.7/sqrt(88))<BR>\n" );
document.write( "CI:  25.8 - ME < <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=mu ALIGN=MIDDLE  ALT=\"mu\"   DISABLED_style= \"max-width:90%; height:auto;\" > < 25.8 + ME </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );