document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=452881>Question 452881</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The scores on a final exam are normally distributed with a mean grade of 79 and a standard deviation of 9.5. The top 10% of the students will receive an \"A\" on this exam. What is the minimum numeric grade a student must get in order to receive the grade of A?  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #311226 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=311226\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The scores on a final exam are normally distributed with a mean grade of 79 and a standard deviation of 9.5. The top 10% of the students will receive an \"A\" on this exam. What is the minimum numeric grade a student must get in order to receive the grade of A?<BR>\n" );
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document.write( "Find the z-value with a right-tail of 10%:<BR>\n" );
document.write( "z = 1.2816<BR>\n" );
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document.write( "Find the corresponding x-value:<BR>\n" );
document.write( "x = zs+u<BR>\n" );
document.write( "x = 1.2816*9.5+79 = 91.17<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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