document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=591290>Question 591290</A>: <I><SPAN STYLE=\"word-break: break-all;\"> My Stat 154 class, let mean score is 78 and standard deviation is 7.  I would like to award A to top 10% students. Find the minimum score student should get  in order to get A in my class </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #375608 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=375608\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> My Stat 154 class, let mean score is 78 and standard deviation is 7. I would like to award A to top 10% students. Find the minimum score student should get in order to get A in my class<BR>\n" );
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document.write( "Find the z-value with a left tail of 90%.<BR>\n" );
document.write( "z = 1.2816<BR>\n" );
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document.write( "Find the corresponding score:<BR>\n" );
document.write( "x = zs+u<BR>\n" );
document.write( "x = 1.2816*7 + 78 = 86.97<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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