document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1178343>Question 1178343</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The weights of a certain group of high school boys have a normal distribution with a mean of 146 lb and a standard deviation of 10lb. Find the percent of the group having a weight<BR>\n" );
document.write( "(a) greater than 154 lb.<BR>\n" );
document.write( "(b) less than 132 lb. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #807777 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=807777\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> z=(x-mean)/sd<BR>\n" );
document.write( "> 154 is z > (154-146)/10 or z> 0.8.  Has probability 0.2119 or 21.2%<BR>\n" );
document.write( "- <BR>\n" );
document.write( "< 132 is z < (132-146)/10 or -1.4. Has probability of 0.0808 or 8.1% </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );