document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=910986>Question 910986</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find the standard score (z) for which 50% of the area under the normal curve is below the mean. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #552790 by </B><A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><B>jim_thompson5910(35256)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><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=552790\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> z = 0 is at the exact center of the standard normal distribution.\r<BR>\n" );
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document.write( "Since we have perfect symmetry about the center, this means that 50% of the distribution is below z = 0. The other 50% is above z = 0.\r<BR>\n" );
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document.write( "z = 0 is an arbitrary number that was picked by convention a long time ago. Zero was chosen since it's a small easy number to work with and because you can work with positive and negative numbers (to the right and left of 0) </SPAN>\n" );
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