document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=905950>Question 905950</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find the minimum sample size that should be chosen to assure that the proportion estimate p will be within the required margin of error, .06. Use a 95% confidence interval and a population proportion of .7. The critical value for a 95% confidence level is 1.96 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #549539 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=549539\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <BR>\n" );
document.write( "You may use Your TI (or any other calculator for the Arithmetic...)<BR>\n" );
document.write( "this one is a need to know:  ME = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=z%2Aalpha%2Fsqrt%28n%29 ALIGN=MIDDLE  ALT=\"z%2Aalpha%2Fsqrt%28n%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > 0r ME = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=z%2Asqrt%28p%281-p%29%2Fn%29 ALIGN=MIDDLE  ALT=\"z%2Asqrt%28p%281-p%29%2Fn%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > when You do not know<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=alpha ALIGN=MIDDLE  ALT=\"alpha\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "ME = .07 = 1.96sqrt(.7*.3/n)<BR>\n" );
document.write( " (.07/1.96)^2  = .21/n<BR>\n" );
document.write( "n = .21/(.07/1.96)^2 = 164.64  0r 165 (always round Up for number of people) </SPAN>\n" );
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