document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=695063>Question 695063</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 234 employees selected randomly from one company, 12.82 % of them commute by carpooling. Construct a 90% confidence interval for the true percentage of all employees of the company who carpool. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #428317 by </B><A HREF=/tutors/aboutme.mpl?userid=reviewermath><B>reviewermath(1029)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=reviewermath><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=reviewermath><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=428317\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Confidence interval - proportion		<BR>\n" );
document.write( "		<BR>\n" );
document.write( "	90%	confidence level<BR>\n" );
document.write( "	sample proportion = 0.1282	<BR>\n" );
document.write( "	n = 234<BR>\n" );
document.write( "	<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=z%5B.05%5D+=+1.645+ ALIGN=MIDDLE  ALT=\"z%5B.05%5D+=+1.645+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "	half-width = 0.036	<BR>\n" );
document.write( "	lower confidence limit = 0.092	<BR>\n" );
document.write( "        upper confidence limit = 0.164	<BR>\n" );
document.write( "	\r<BR>\n" );
document.write( "\n" );
document.write( "Answer: (0.092, 0.164) </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );