document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=851056>Question 851056</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The scores on the Wechsler Adult Intelligence Scale are approximately Normal with mean = 100 and standard deviation = 15\r<BR>\n" );
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document.write( "The proportion of adults with scores above 130 is closest to\r<BR>\n" );
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document.write( "0.001\r<BR>\n" );
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document.write( "0.025\r<BR>\n" );
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document.write( "0.050\r<BR>\n" );
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document.write( "0.950\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 #512554 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=512554\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 130-100 = 30\r<BR>\n" );
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document.write( "30/15 = 2\r<BR>\n" );
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document.write( "So 130 is 2 standard deviations above the mean. \r<BR>\n" );
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document.write( "95% of the distribution is within 2 standard deviations of the mean (using the <a  rel=nofollow HREF=\"http://en.wikipedia.org/wiki/68%E2%80%9395%E2%80%9399.7_rule\">empirical rule</a>).\r<BR>\n" );
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document.write( "So 100 - 95 = 5% of the distribution is in the two tails. \r<BR>\n" );
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document.write( "This means 5/2 = 2.5% of the population is in one tail\r<BR>\n" );
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document.write( "So that's why the answer is <font color=\"red\">0.025</font> (since 2.5% = 0.025) </SPAN>\n" );
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