document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=449362>Question 449362</A>: <I><SPAN STYLE=\"word-break: break-all;\"> In a poll of 200 randomly selected U.S. adults, 104 said they favored a new proposition. Based on this poll, compute a 99% confidence interval for the proportion of all U.S. adults in favor of the proposition ( at the time of the poll). Then compute the table below.\r<BR>\n" );
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document.write( "Carry your intermediate computations to at least three decimal places. Round your answer to two decimal places.\r<BR>\n" );
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document.write( "What is the LOWER limit of the 99% confidence interval?\r<BR>\n" );
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document.write( "What is the UPPER limit of the 99% confidence interval? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #309169 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=309169\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> In a poll of 200 randomly selected U.S. adults, 104 said they favored a new proposition. <BR>\n" );
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document.write( "p-hat = 104/200 = 0.52<BR>\n" );
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document.write( "Based on this poll, compute a 99% confidence interval for the proportion of all U.S. adults in favor of the proposition ( at the time of the poll). Then compute the table below. <BR>\n" );
document.write( "Carry your intermediate computations to at least three decimal places. Round your answer to two decimal places.<BR>\n" );
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document.write( "ME = z*sqrt[pq/n] = 2.5758*sqrt[0.52*0.48/200] = 0.091<BR>\n" );
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document.write( "What is the LOWER limit of the 99% confidence interval?<BR>\n" );
document.write( "p-hat-ME = 0.52-0.091 = 0.429<BR>\n" );
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document.write( "What is the UPPER limit of the 99% confidence interval?<BR>\n" );
document.write( "p-hat+ME = 0.52+0.091 = 0.611<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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