document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=305696>Question 305696</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A study is run to estimate the mean total cholesterol level in children 2 to 6 years of age. A sample of 9 participants is selected and their total cholesterol levels are measured as follows:<BR>\n" );
document.write( "185 225 240 196 175 180 194 147 223\r<BR>\n" );
document.write( "\n" );
document.write( "Generate a 95% confidence interval for the true mean total cholesterol level children.\r<BR>\n" );
document.write( "\n" );
document.write( "How it solves with 95% formula should be?<BR>\n" );
document.write( "Gloria </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #218890 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=218890\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A study is run to estimate the mean total cholesterol level in children 2 to 6 years of age. A sample of 9 participants is selected and their total cholesterol levels are measured as follows:<BR>\n" );
document.write( "185 225 240 196 175 180 194 147 223<BR>\n" );
document.write( "---<BR>\n" );
document.write( "Find the sample mean (x-bar) = 196.11 <BR>\n" );
document.write( "and sample standard deviation (s = 29.00<BR>\n" );
document.write( "----------------------------- <BR>\n" );
document.write( "Generate a 95% confidence interval for the true mean total cholesterol level children.<BR>\n" );
document.write( "----<BR>\n" );
document.write( "Determine the standard error: E = (invT(0.975 with df=8)*29/sqrt(9)<BR>\n" );
document.write( "= 2.306*9.667 = 22.29<BR>\n" );
document.write( "-------- <BR>\n" );
document.write( "How it solves with 95% formula should be?<BR>\n" );
document.write( "--------<BR>\n" );
document.write( "95% CI:: 196.11- 29 < u < 196.11+29<BR>\n" );
document.write( "========================================\r<BR>\n" );
document.write( "\n" );
document.write( "========================================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );