document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1100883>Question 1100883</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The owner of a company repair shop has determined that their daily revenue has mean $7200 and a standard deviation $1200. the daily revenue totals for the next 30 days will be monitored. What is the probability that the mean daily revenue for the next 30 days will exceed $7000? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #715482 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=715482\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> this will be greater than z=(xbar-mean)/sigma/sqrt(n)<BR>\n" );
document.write( "z>(7000-7200)/(1200/sqrt(30)<BR>\n" );
document.write( ">-200*sqrt(30)/1200>-0.91<BR>\n" );
document.write( "This probability is 0.8186. </SPAN>\n" );
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