document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=509425>Question 509425</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Can you explain to me how to do this problem? I am very lost here.\r<BR>\n" );
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document.write( "Find the z-score for the standard normal distribution where:\r<BR>\n" );
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document.write( "P(-a<z<0) = 0.3980<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 #341473 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=341473\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Find the z-score for the standard normal distribution where:\r<BR>\n" );
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document.write( "P(-a< z <0) = 0.3980<BR>\n" );
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document.write( "Draw the picture on a normal curve so you can see why <BR>\n" );
document.write( "these numbers are what they are.<BR>\n" );
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document.write( "-a must be a z-value that has a left tail of 0.5000-0.3980 = 0.1020<BR>\n" );
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document.write( "That z-value is invNorm(0.1020) = -1.2702<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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