document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1088414>Question 1088414</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Please help me solve the following problem: Weights of NUST male students have a distribution that can be approximated by a normal curve with a mean of 65kg and a standard deviation equal to 8kg. what proportion of these are between 65 and 70?<BR>\n" );
document.write( "A. 23.57<BR>\n" );
document.write( "B. 50<BR>\n" );
document.write( "C. 23.52<BR>\n" );
document.write( "D. 26.43 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #702665 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=702665\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Calculate the z scores.<BR>\n" );
document.write( "Then get the probabilities from the z scores and subtract to get the percentage in the range.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=z%5B1%5D=%2865-65%29%2F8=0 ALIGN=MIDDLE  ALT=\"z%5B1%5D=%2865-65%29%2F8=0\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=z%5B2%5D=%2870-65%29%2F8=5%2F8=0.625 ALIGN=MIDDLE  ALT=\"z%5B2%5D=%2870-65%29%2F8=5%2F8=0.625\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=P%28z=0%29=0.5 ALIGN=MIDDLE  ALT=\"P%28z=0%29=0.5\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Find P(0.625).<BR>\n" );
document.write( "So then the answer is,<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=X=%28P%280.625%29-0.5%29%2A100 ALIGN=MIDDLE  ALT=\"X=%28P%280.625%29-0.5%29%2A100\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
document.write( "\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );