document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1179084>Question 1179084</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The Utility company wishes to estimate the percentage of people in the U.S. who use electrical heat in their homes. Past data indicates that 154 out of 700 customers surveyed used electrical heat. If the company wishes to be 95% confident and accurate within 3%, how large of a sample is needed?<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #808581 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=808581\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> P = 154/700 = .22<BR>\n" );
document.write( "n = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28z%2FME%29%5E2+%28p%281-p%29%29%29 ALIGN=MIDDLE  ALT=\"%28z%2FME%29%5E2+%28p%281-p%29%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "n = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%281.96%2F.03%29%5E2+%28.22%28.78%29%29%29 ALIGN=MIDDLE  ALT=\"%281.96%2F.03%29%5E2+%28.22%28.78%29%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > = 732.47  UP TO WHOLE NUMBER:  733 </SPAN>\n" );
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