document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1001800>Question 1001800</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Use the given data to find the 95% confidence interval estimate of the population mean &#956;. Assume that the population has a normal distribution.\r<BR>\n" );
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document.write( "IQ scores of professional athletes: <BR>\n" );
document.write( "Sample size n = 20<BR>\n" );
document.write( "Mean x bar = 103<BR>\n" );
document.write( "Standard deviation s = 15 \r<BR>\n" );
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document.write( "When I did it myself the figures I got were 96.43<&#956;<109.57 but it's telling me this is incorrect and I don't know where i'm going wrong. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #618888 by </B><A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><B>jim_thompson5910(35256)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><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=618888\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> You're using z when perhaps they want you to use t instead. If you do that, you'll have this confidence interval 95.98 < mu < 110.02\r<BR>\n" );
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document.write( "Another thought: maybe they want you to round to more decimal places? </SPAN>\n" );
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