document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1080755>Question 1080755</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Construct and interpret confidence intervals for the population mean: a random sample of 40 students has a test score with x=8.15 and s=10.2.construct the confidence interval for the population mean, u if c=0.90 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #694872 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=694872\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\">  Construct and interpret confidence intervals for the population mean: a random sample of 40 students has a test score with x=8.15 and s=10.2.construct the confidence interval for the population mean, u if c=0.90 <BR>\n" );
document.write( "Sample mean = 8.15<BR>\n" );
document.write( "ME = z*s/sqrt(n)<BR>\n" );
document.write( "ME = 1.645*10.2/sqrt(40) = 2.653<BR>\n" );
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document.write( "90% CI:: 8.15-2.653 < u < 8.15+2.653<BR>\n" );
document.write( "90% CI:: 5.497 < u < 10.803<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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