document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1182957>Question 1182957</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The main weekly salary a plant workers and a large corporation is $800 and a standard deviation is $120. Find the probability that the sampling error made is no more than $50 when predicting this mean salary based on the salary of 36 workers at a particular plant.  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #813101 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=813101\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The SEM is sd/sqrt(n) or $120/6 or$ 20.<BR>\n" );
document.write( "So the probability that sampling error is no more than $50 is another way of saying the sampling error is within 2.5 sd s of the mean.<BR>\n" );
document.write( "so -2.5 < z < 2.5<BR>\n" );
document.write( "and that probability is 0.9876.<BR>\n" );
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