document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=426942>Question 426942</A>: <I><SPAN STYLE=\"word-break: break-all;\"> What is the smallest sample size if we want to estimate the population mean with a 95% confidence, a standard deviation of 60 and have the precision within (plus-minus) 5? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #296957 by </B><A HREF=/tutors/aboutme.mpl?userid=robertb><B>robertb(5830)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=robertb><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=robertb><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=296957\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=5+%3E=+%28s%2Fsqrt%28n%29%29%2A1.96 ALIGN=MIDDLE  ALT=\"5+%3E=+%28s%2Fsqrt%28n%29%29%2A1.96\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
document.write( "\n" );
document.write( "<==> <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=5+%3E=+%2860%2Fsqrt%28n%29%29%2A1.96 ALIGN=MIDDLE  ALT=\"5+%3E=+%2860%2Fsqrt%28n%29%29%2A1.96\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<==>  <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=25%2F588+%3E=+1%2Fsqrt%28n%29 ALIGN=MIDDLE  ALT=\"25%2F588+%3E=+1%2Fsqrt%28n%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<==> <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=588%2F25+%3C=+sqrt%28n%29 ALIGN=MIDDLE  ALT=\"588%2F25+%3C=+sqrt%28n%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<==> <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=23.52+%3C=+sqrt%28n%29 ALIGN=MIDDLE  ALT=\"23.52+%3C=+sqrt%28n%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<==> <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=553.19+%3C=+n ALIGN=MIDDLE  ALT=\"553.19+%3C=+n\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "The smallest sample is thus 554. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );