document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=159734>Question 159734</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The time required for a citizen to complete the 2000 U.S. Census “long” form is normally distributed with a mean of 40 minutes and a standard deviation of 10 minutes.  \r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "9. What proportion of the citizens will require less than one hour?\r<BR>\n" );
document.write( "\n" );
document.write( "A)  0.4772<BR>\n" );
document.write( "B)  0.9772<BR>\n" );
document.write( "C)  0.9974<BR>\n" );
document.write( "D)  0.9997\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "10. The slowest 10% of the citizens would need at least how many minutes to complete the form?\r<BR>\n" );
document.write( "\n" );
document.write( "A)  27.2<BR>\n" );
document.write( "B)  35.8	<BR>\n" );
document.write( "C)  56.4	<BR>\n" );
document.write( "D)  59.6<BR>\n" );
document.write( " \r<BR>\n" );
document.write( "<BR>\n" );
document.write( "<BR>\n" );
document.write( "<BR>\n" );
document.write( "<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( " </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #117808 by </B><A HREF=/tutors/aboutme.mpl?userid=edjones><B>edjones(8007)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=edjones><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=edjones><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=117808\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 9)<BR>\n" );
document.write( "1 hr=40+20 min.<BR>\n" );
document.write( "20=2 standard deviations<BR>\n" );
document.write( "50%+34.1%+13.6%=97.7% B<BR>\n" );
document.write( ".<BR>\n" );
document.write( "10)<BR>\n" );
document.write( "10% would be between 1 & 2 SD's on the high side so 56.4 min is about right.\r<BR>\n" );
document.write( "\n" );
document.write( "Ed </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );