document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=490308>Question 490308</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Please help I have been struggling with this problem for the last hour I am so confused on what to do..thank yuo very much\r<BR>\n" );
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document.write( "Determine the value of the confidence coefficient z (&#945;/2) for the situation below: 1 &#8722; &#945; = 0.90 Show All Work\r<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #334000 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=334000\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Determine the value of the confidence coefficient z (&#945;/2) for the situation below: 1 &#8722; &#945; = 0.90 Show All Work \r<BR>\n" );
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document.write( "How you find the answer depends on whether you are using<BR>\n" );
document.write( "a z-chart (you can find one online) or some technology<BR>\n" );
document.write( "(such as EXCEL or a TI calculator)<BR>\n" );
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document.write( "Here's the way to think about it.<BR>\n" );
document.write( "If 1- alpha = 0.90, alpha must be 10%<BR>\n" );
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document.write( "So alpha/2 = 5%<BR>\n" );
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document.write( "You want the z-values which have 90% centered on<BR>\n" );
document.write( "the mean.  That is the same as the z-values which<BR>\n" );
document.write( "have a left-tail of 5% and a right-tail of 5%.<BR>\n" );
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document.write( "Those values are -1.645 and +1.645<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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