document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=986467>Question 986467</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 1200 students took an examination. Their mean marks is 53. The standard deviation is 15. Assume Normal distribution of marks.If only 40% of the students are required to be promoted, what should be the marks for promotion? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #607393 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=607393\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 1200 students took an examination. Their mean marks is 53. The standard deviation is 15. Assume Normal distribution of marks.If only 40% of the students are required to be promoted, what should be the marks for promotion?<BR>\n" );
document.write( "----------<BR>\n" );
document.write( "Find the z-value with a right tail of 40%<BR>\n" );
document.write( "----<BR>\n" );
document.write( "invNorm(0.60) = 0.2534<BR>\n" );
document.write( "-------------------<BR>\n" );
document.write( "Find the corresponding mark value::<BR>\n" );
document.write( "x = 0.2534*15+53<BR>\n" );
document.write( "Ans:: x = 56.8<BR>\n" );
document.write( "-------<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );