document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=641370>Question 641370</A>: <I><SPAN STYLE=\"word-break: break-all;\"> \"If the random variable z is the standard normal score and a > 0, is it true that P9z > -a) = P9z < a)\"<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 #403621 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=403621\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> \"If the random variable z is the standard normal score and a > 0, is it true that P(z > -a) = P(z < a)\"<BR>\n" );
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document.write( "Draw a normal curve with \"z\" as the horizontal axis.<BR>\n" );
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document.write( "Put z = zero in the center of the horizontal axis.<BR>\n" );
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document.write( "Choose some arbitrary a > 0; mark it on the axis.<BR>\n" );
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document.write( "Mark z = -a to the left of z = 0.<BR>\n" );
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document.write( "Question: Is the area to the right of -a equal to the area to the left of +a?<BR>\n" );
document.write( "Answer: Yes<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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