document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=324439>Question 324439</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Z Test question....<BR>\n" );
document.write( "A state community is elgible for clothes the mean income per annum is $3,000 or less. A simple random sample of 100 people was drawn from the place and the mean income is $2,500. The standard deviation is  $200. Find out the proportion with annual incom between $2500 or less?\r<BR>\n" );
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document.write( "This is what I got... 3000-2500/200= 500/200= 2.5(Check the appendix for z at 2.5) I got .4938 and  .5-.4938=.0062 when converted to percent I got .62% </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #232318 by </B><A HREF=/tutors/aboutme.mpl?userid=Fombitz><B>Fombitz(32388)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Fombitz><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=Fombitz><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=232318\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Your question is confusing.<BR>\n" );
document.write( "Find out the propoetion with annual income between $2500 and less.<BR>\n" );
document.write( "Did you mean $2500 and less?<BR>\n" );
document.write( "If so why did you use $3000 to calculate the z score? <BR>\n" );
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document.write( "Also, if z=2.5, then P=0.5+0.4938=0.9938, add, don't subtract.<BR>\n" );
document.write( "So if the mean is $2500 and std. dev. is $200, 99.38% of the people make less than $3000. <BR>\n" );
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document.write( "Please re-post.  </SPAN>\n" );
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