document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=867492>Question 867492</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Suppose we want to estimate, by random sampling, the proportion of all college students who think they are getting a good education in college. Find, with 95 percent confidence, the number of such students that should be randomly sampled if we want the margin of sampling error to be no more than three percentage points. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #523061 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=523061\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Find, with 95 percent confidence, the number of such students that should be randomly sampled if we want the margin of sampling error to be no more than three percentage points.<BR>\n" );
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document.write( "Since E = z*s/sqrt(n), <BR>\n" );
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document.write( "n = [z*s/E]^2<BR>\n" );
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document.write( "Your Problem:<BR>\n" );
document.write( "n = [[1.96*s/0.03]^2<BR>\n" );
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document.write( "Note:: The standard deviation is missing from your post<BR>\n" );
document.write( "so \"n\" cannot be calculated.<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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