document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1120175>Question 1120175</A>: <I><SPAN STYLE=\"word-break: break-all;\"> •	Suppose you are interested in how long it takes to get your food at a restaurant. Now, suppose this distribution is approximately normal with an average of eight minutes and a standard deviation of two minutes. If you made a control chart for this data, what would be the highest control limit?\r<BR>\n" );
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document.write( "A) Suppose someone gets the food after exactly 11 minutes. How many standard deviations from the mean is this value of 11?\r<BR>\n" );
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document.write( "B) What is the probability that someone would get the food after more than 11 minutes?<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #735853 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=735853\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> For A, (x-mean)/sd is the sd from the mean. (11=8)/2=1.5 sd from the mean.<BR>\n" );
document.write( "If normal distribution, that is a z-value of +1.5, and the probability of something greater than that is 0.0668.\r<BR>\n" );
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document.write( "If you set control limits as mean+/-3 sd, that would be 14 minutes (8+3(2)) for the upper limit. </SPAN>\n" );
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