document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1170018>Question 1170018</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The marks for a university class were normally distributed with a mean of 65% and a standard deviation of 20%. What is the probability that a student selected at random from the class had a mark that was between 60% and 75%? Give your answer to four decimal places. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #794899 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=794899\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> z=(x-mean)/sd<BR>\n" );
document.write( "so z (0.60) is (60-65)/20 or -0.25<BR>\n" );
document.write( "and z(0.75) is +0.5<BR>\n" );
document.write( "The probability of z between those two values is 0.2902 </SPAN>\n" );
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