document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1026130>Question 1026130</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 65 and standard deviation 20. 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 #641399 by </B><A HREF=/tutors/aboutme.mpl?userid=robertb><B>robertb(5830)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=robertb><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/cgi-bin/show-face.mpl?user=robertb><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=641399\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=P%28X%3E=beta%29+=+0.10 ALIGN=MIDDLE  ALT=\"P%28X%3E=beta%29+=+0.10\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<==> <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=P%28Z+=+%28X-mu%29%2Fsigma%29+=+P%28Z+=+%28X+-+65%29%2F20+%3E=+%28beta+-+65%29%2F20%29+=+0.10 ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "By referring to a table of standard normal values, we find that\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28beta+-+65%29%2F20+=+1.285 ALIGN=MIDDLE  ALT=\"%28beta+-+65%29%2F20+=+1.285\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "==> <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=beta+=+65%2B20%2A1.285+=+90.7 ALIGN=MIDDLE  ALT=\"beta+=+65%2B20%2A1.285+=+90.7\"   DISABLED_style= \"max-width:90%; height:auto;\" >, \r<BR>\n" );
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document.write( "==> the minimum score to get an A is 91. </SPAN>\n" );
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