document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=306856>Question 306856</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A national achievement test has a normal distribution, a mean of 1000, and a standard deviation of 100.\r<BR>\n" );
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document.write( "What percent, to the nearest whole percent, of the students taking the test scored above 800?<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #219526 by </B><A HREF=/tutors/aboutme.mpl?userid=Fombitz><B>Fombitz(32388)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Fombitz><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=Fombitz><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=219526\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Find the z score.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=z=%28x-xave%29%2Fsigma ALIGN=MIDDLE  ALT=\"z=%28x-xave%29%2Fsigma\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=z=%28800-1000%29%2F100 ALIGN=MIDDLE  ALT=\"z=%28800-1000%29%2F100\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=z=-2 ALIGN=MIDDLE  ALT=\"z=-2\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "At <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=z=-2 ALIGN=MIDDLE  ALT=\"z=-2\"   DISABLED_style= \"max-width:90%; height:auto;\" >, the area under the normal distribution curve is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=0.02275 ALIGN=MIDDLE  ALT=\"0.02275\"   DISABLED_style= \"max-width:90%; height:auto;\" >. <BR>\n" );
document.write( "That means that 2.275% scored 800 or below. <BR>\n" );
document.write( "The total area under the curve equals 1. <BR>\n" );
document.write( "So subtract the value for <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=z=-2 ALIGN=MIDDLE  ALT=\"z=-2\"   DISABLED_style= \"max-width:90%; height:auto;\" > from <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1 ALIGN=MIDDLE  ALT=\"1\"   DISABLED_style= \"max-width:90%; height:auto;\" > to get the % that scored over 800.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1-0.02275=0.97725 ALIGN=MIDDLE  ALT=\"1-0.02275=0.97725\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "To the nearest percent 98% of students scored over 800.  </SPAN>\n" );
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