document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=813423>Question 813423</A>: <I><SPAN STYLE=\"word-break: break-all;\"> if we wish to estimate the population mean within 5, with a 99% level of confidence. The population standard deviation of 15. What size of sample is required </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #489655 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=489655\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> if we wish to estimate the population mean within 5, with a 99% level of confidence. The population standard deviation of 15. What size of sample is required<BR>\n" );
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document.write( "Since E = z<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 = [2.5758*15/5]^2 = [2.5758*3]^2 = 60 when rounded up<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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