document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1171197>Question 1171197</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A market survey is conducted by a government regulator to determine the proportion of homeowners who would switch to a new internet service provider if they had the opportunity to do so. Of the 1 200 homeowners surveyed, 800 said that they would switch. 	<BR>\n" );
document.write( "Construct a 99% confidence interval for the population proportion of homeowners who would switch if given the opportunity. 	              			                      \r<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #796118 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=796118\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> half-interval is z(0.995)*sqrt((2/3*1/3)/1200)<BR>\n" );
document.write( "=2.576*sqrt (1/5400)=0.0351<BR>\n" );
document.write( "the point estimate is 0.667<BR>\n" );
document.write( "the 99%CI is (0.632, 0.702) </SPAN>\n" );
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