document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=465167>Question 465167</A>: <I><SPAN STYLE=\"word-break: break-all;\"> the frequency distribution of scores on an examination is closely described by a bell shaped frequency curve and the distribution has a mean of 57.5 and a standard deviation of 10.<BR>\n" );
document.write( "i) what percentage of candidates would be awarded grade A if the cut-off for grade A is 75 Marks? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #318748 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=318748\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> the frequency distribution of scores on an examination is closely described by a bell shaped frequency curve and the distribution has a mean of 57.5 and a standard deviation of 10.<BR>\n" );
document.write( "i) what percentage of candidates would be awarded grade A if the cut-off for grade A is 75 Marks?<BR>\n" );
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document.write( "z(75) = (75-57.5)/10 = 1.75<BR>\n" );
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document.write( "%(x > 75) = %(z > 1.75) = normalcdf(1.75,100) = 4.01%<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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