document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1053922>Question 1053922</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The owner of a computer repair shop has determined that their daily revenue has mean $7200 and 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 $7500?\r<BR>\n" );
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document.write( "How can I solve this with a calculator? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #669146 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=669146\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> mean $7200 and standard deviation $1200.<BR>\n" );
document.write( "n = 30, x&#772; = mean daily revenue for the next 30 days <BR>\n" );
document.write( "Need to Know: <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=z+=blue+%28x-bar+-+mu%29%2Fblue%28sigma%2Fsqrt%28n%29%29 ALIGN=MIDDLE  ALT=\"z+=blue+%28x-bar+-+mu%29%2Fblue%28sigma%2Fsqrt%28n%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "P(x&#772; >7500) = 1- P(x&#772; <= 7500) = 1- P(z <= <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%287500+-7200%29%2F+%281200%2Fsqrt%2830%29%29 ALIGN=MIDDLE  ALT=\"%287500+-7200%29%2F+%281200%2Fsqrt%2830%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >)<BR>\n" );
document.write( "Use Calculator to  find value of z<BR>\n" );
document.write( "then use Calculator to find P( z <= that value) = normalcdf(-100, z-value) <BR>\n" );
document.write( "-100 a place value<BR>\n" );
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