document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1033456>Question 1033456</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A professor has found that the grades on a Statistics Exam are normally distributed with mean 72 and<BR>\n" );
document.write( "a standard deviation of 12. If only the best 15 % of the grades in the class will get an A, what grade<BR>\n" );
document.write( "must a student get in order to get an A?\r<BR>\n" );
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document.write( "I got as far as 15%=15/100=.15<BR>\n" );
document.write( "1-.15=.85<BR>\n" );
document.write( "and I got  stuck. plz help me </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #648223 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=648223\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> We need to find <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=alpha ALIGN=MIDDLE  ALT=\"alpha\"   DISABLED_style= \"max-width:90%; height:auto;\" > such that \r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=P%28X+%3E=+alpha%29+=+0.15 ALIGN=MIDDLE  ALT=\"P%28X+%3E=+alpha%29+=+0.15\"   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%28%28X-72%29%2F12+%3E=+%28alpha+-+72%29%2F12%29+=+P%28Z+%3E=%28alpha+-+72%29%2F12%29+=+0.15 ALIGN=MIDDLE   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=%28alpha+-+72%29%2F12+=+1.035 ALIGN=MIDDLE  ALT=\"%28alpha+-+72%29%2F12+=+1.035\"   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=alpha+=+84.42 ALIGN=MIDDLE  ALT=\"alpha+=+84.42\"   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );