document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1120131>Question 1120131</A>: <I><SPAN STYLE=\"word-break: break-all;\"> #8<BR>\n" );
document.write( "A political candidate has asked you to conduct a poll to determine what percentage of people support her.\r<BR>\n" );
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document.write( "If the candidate only wants a 6% margin of error at a 90% confidence level, what size of sample is needed?\r<BR>\n" );
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document.write( "Give your answer in whole people.<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 #735850 by </B><A HREF=/tutors/aboutme.mpl?userid=rothauserc><B>rothauserc(4718)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=rothauserc><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=rothauserc><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=735850\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> there is not enough information to solve this problem without making certain assumptions<BR>\n" );
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document.write( "if you were given the standard deviation of the population, it is solvable<BR>\n" );
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document.write( "assume the population is large, say 100,000 and the proportion is 50% of the population supports the candidate<BR>\n" );
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document.write( "then the formula for sample sizing using the proportion formula yields an answer of 188<BR>\n" );
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document.write( "note that the sample size does not increase appreciably with populations greater than 100,000<BR>\n" );
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