document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1009754>Question 1009754</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Mr Williams has 184 students in his college mathematics lecture class. The score ob the midterm exam are normally distributed with a mean of 72.3 and a standard deviation of 8.9. How many students in the class can be expected to receive a score between 82 and 90? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #625255 by </B><A HREF=/tutors/aboutme.mpl?userid=Boreal><B>Boreal(15235)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Boreal><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=Boreal><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=625255\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> z=(x-mu)/sigma<BR>\n" );
document.write( "(82-72.3)/8.9=1.0899<BR>\n" );
document.write( "(90-72.3)/8.9=1.9888<BR>\n" );
document.write( "The proportion between these z-scores is 0.1145<BR>\n" );
document.write( "Multiply that by the number of students in the class, and there would be 21 students in this group. </SPAN>\n" );
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