document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=555031>Question 555031</A>: <I><SPAN STYLE=\"word-break: break-all;\"> If we wish to have a 98% confidence interval, what would be the value of &#945;/2? Show how you arrived at this answer. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #361622 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=361622\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> If we wish to have a 98% confidence interval, <BR>\n" );
document.write( "what would be the value of &#945;/2?<BR>\n" );
document.write( "----<BR>\n" );
document.write( "98% confidence leaves 2% in the normal distribution tails.<BR>\n" );
document.write( "That leaves 1% in the left tail and 1% in the right tail.<BR>\n" );
document.write( "You could use your z-chart or your calculator to find the<BR>\n" );
document.write( "z-value with a left (or right) tail of 0.0100<BR>\n" );
document.write( "That number is - or +2.3263<BR>\n" );
document.write( "Use the positive value to calculate the confidence interval.<BR>\n" );
document.write( "-------  <BR>\n" );
document.write( "Show how you arrived at this answer.<BR>\n" );
document.write( "I used my TI-84 instruction: invNorm(0.01) = -2.3263<BR>\n" );
document.write( "----<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( "======== </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );