document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=317029>Question 317029</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Can someone please help me get this problem finished or should I say help me with it. I am totally drawing a blank.<BR>\n" );
document.write( "A randomly selected sample of n = 51 men in Brazil had an average lifespan of 59 years. The standard deviation was 10 years, and the standard error of the mean is 1.400. Calculate a 90% confidence interval for the average lifespan for all men in Brazil.<BR>\n" );
document.write( "1) (56.6, 61.4)<BR>\n" );
document.write( "2)(42.2, 75.8)<BR>\n" );
document.write( "3) (56.2, 61.8)<BR>\n" );
document.write( "Kristal<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #227038 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=227038\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A randomly selected sample of n = 51 men in Brazil had an average lifespan of 59 years. The standard deviation was 10 years, and the standard error of the mean is 1.400. Calculate a 90% confidence interval for the average lifespan for all men in Brazil.<BR>\n" );
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document.write( "x-bar = 59<BR>\n" );
document.write( "ME = (invT(0.05 with df = 50)*SE<BR>\n" );
document.write( "ME = (1.6759)1.4 = 2.3463<BR>\n" );
document.write( "---<BR>\n" );
document.write( "90% CI: 59-2.3463 < u < 59+2.3463<BR>\n" );
document.write( "90% CI: 56.65 < u < 61.35<BR>\n" );
document.write( "==================================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( "===============================\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "1) (56.6, 61.4)<BR>\n" );
document.write( "2)(42.2, 75.8)<BR>\n" );
document.write( "3) (56.2, 61.8)<BR>\n" );
document.write( "Kristal<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );