document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=996051>Question 996051</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A television sports commentator wants to estimate the proportion of citizens who follow professional football. What sample size should be obtained if he wants to be within 2 percentage points with 94% confidence if he uses an estimate of 54% obtained from a poll? Round to nearest integer.  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #614639 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=614639\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\">  A television sports commentator wants to estimate the proportion of citizens who follow professional football. What sample size should be obtained if he wants to be within 2 percentage points with 94% confidence if he uses an estimate of 54% obtained from a poll? Round to nearest integer. <BR>\n" );
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document.write( "Since E = z*sqrt[p*q/n]<BR>\n" );
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document.write( "n = [z/E]^2*pq<BR>\n" );
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document.write( "n = [1.8808/0.02]^2*0.54*0.46 = 2197 when rounded up<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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