document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=634685>Question 634685</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Suppose I want to estimate the proportion of Americans who watch TV. So I collected a random sample of 100 Americans and proportion for my sample was 0.42. Find the 95% CI. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #399876 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=399876\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> So I collected a random sample of 100 Americans and proportion for my sample was 0.42. Find the 95% CI.<BR>\n" );
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document.write( "p-hat = 0.42<BR>\n" );
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document.write( "E = 1.96*sqrt(0.42*0.58/100) = 0.0967<BR>\n" );
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document.write( "95%CI: 0.42-0.0967 < p < 0.42+0.0967<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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