document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1162075>Question 1162075</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Past surveys reveal that 40% of Florida winter vacationers spend more than $3000 per month on accommodation. Florida tourism wants to update this information. Using the 90% confidence level and an error of 5%, what is the necessary sample size?<BR>\n" );
document.write( "Please could you help me with the correct answer and the explanation?<BR>\n" );
document.write( "Thank you\r<BR>\n" );
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document.write( "Mean	3000<BR>\n" );
document.write( "E	0,40<BR>\n" );
document.write( "z = 	1,645<BR>\n" );
document.write( "p =	0,5<BR>\n" );
document.write( "n = 	4,2282E+00<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #785797 by </B><A HREF=/tutors/aboutme.mpl?userid=Boreal><B>Boreal(15235)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Boreal><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=Boreal><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=785797\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> half-interval is z*sqrt(0.40*0.60/n)=0.05<BR>\n" );
document.write( "z=1.645<BR>\n" );
document.write( "square both sides, move the n to the right and 0.05 to the denominator on the left.<BR>\n" );
document.write( "2.706*0.24/0.0025=n=259.77 or 260 people </SPAN>\n" );
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