document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=930625>Question 930625</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A nurse at a local hospital is interested in estimating the birth weight of infants. How large a sample must she select if she desires to be 99% confident that the true mean is within 2 ounces of the sample mean? The standard deviation of the birth w eights is known to be 7 ounces.\r<BR>\n" );
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document.write( "A)10<BR>\n" );
document.write( "B)81<BR>\n" );
document.write( "C)9<BR>\n" );
document.write( "D)82 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #565166 by </B><A HREF=/tutors/aboutme.mpl?userid=ewatrrr><B>ewatrrr(24785)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ewatrrr><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=ewatrrr><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=565166\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> n = ( 2.576(7)/2)^2 = 81.288 (Always Up to next Integer)<BR>\n" );
document.write( "Sample size: 82 </SPAN>\n" );
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