document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1159285>Question 1159285</A>: <I><SPAN STYLE=\"word-break: break-all;\"> There are 330 students at Valley Central High School enrolled in Chemistry. On the April report card, the students' grades are approximately normally distributed with a mean of 78 and a standard deviation of 7.9. Students who earn a grade less than or equal to 64.9 must attend summer school. The number of students who must attend summer school for Chemistry is closest to </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #782529 by </B><A HREF=/tutors/aboutme.mpl?userid=VFBundy><B>VFBundy(438)</B></A><img src=\"/images/stars/stars-10.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=VFBundy><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=VFBundy><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=782529\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> z-score = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%2864.9+-+78%29%2F7.9 ALIGN=MIDDLE  ALT=\"%2864.9+-+78%29%2F7.9\"   DISABLED_style= \"max-width:90%; height:auto;\" > = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-13.1%2F7.9 ALIGN=MIDDLE  ALT=\"-13.1%2F7.9\"   DISABLED_style= \"max-width:90%; height:auto;\" > = -1.66<BR>\n" );
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document.write( "Look up -1.66 on a z-table.  The result is 0.0485.  This means 4.85% of the 330 students will have to attend summer school:<BR>\n" );
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document.write( "330 * 0.0485 = <b>16</b> </SPAN>\n" );
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