document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=807019>Question 807019</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A teacher says that the top 10% of the class received an A on the last test. The scores were normally distributed with mean 63 and standard deviation 10. Find the minimum score required to get an A. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #486154 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=486154\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A teacher says that the top 10% of the class received an A on the last test. The scores were normally distributed with mean 63 and standard deviation 10. Find the minimum score required to get an A.<BR>\n" );
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document.write( "Find the z-score with a left tail of 0.9 (right tail of 0.10).<BR>\n" );
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document.write( "invNorm(0.9) = 1.2816<BR>\n" );
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document.write( "Find the corresponding score:<BR>\n" );
document.write( "x =z*s + u<BR>\n" );
document.write( "x = 1.2816*10 + 63<BR>\n" );
document.write( "x = 75.816<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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