document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=567524>Question 567524</A>: <I><SPAN STYLE=\"word-break: break-all;\"> In the formula for the Confidence Interval for the Mean, if the Confidence Coefficient, z(&#945;/2) = 2.58, what is the Confidence Level?  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #366586 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=366586\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> In the formula for the Confidence Interval for the Mean, if the Confidence Coefficient, z(&#945;/2) = 2.58, what is the Confidence Level? <BR>\n" );
document.write( "----<BR>\n" );
document.write( "Draw a normal curve where the horizontal axis is the z-values.<BR>\n" );
document.write( "Plot z = 2.58<BR>\n" );
document.write( "Find the area to the right of 2.58<BR>\n" );
document.write( "normalcdf(2.58,100) = 0.0049<BR>\n" );
document.write( "----<BR>\n" );
document.write( "Then alpha = 2(0.0049) = 0.0099<BR>\n" );
document.write( "----<BR>\n" );
document.write( "So, 1% is in the two tails.<BR>\n" );
document.write( "So the confidence level is 99%<BR>\n" );
document.write( "==================================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );