document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=437211>Question 437211</A>: <I><SPAN STYLE=\"word-break: break-all;\">  Scores on the Stanford-Binet Intelligence scale have a mean of 100 and a standard deviation of 16, and are presumed to be normally distributed.  A person who scores 68 on this scale has what percentile rank within the population?  Show all work as to how this is obtained. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #302421 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=302421\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\">  Scores on the Stanford-Binet Intelligence scale have a mean of 100 and a standard deviation of 16, and are presumed to be normally distributed. A person who scores 68 on this scale has what percentile rank within the population? Show all work as to how this is obtained.<BR>\n" );
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document.write( "z(68) = (68-100)/16 = -2.5<BR>\n" );
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document.write( "Find the p-value or left-tail of z= -2.5:<BR>\n" );
document.write( "normalcdf(-100,-2.5) = 0.00621<BR>\n" );
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document.write( "%ile score of raw score 68 is 0.621%ile<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( " </SPAN>\n" );
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