document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1136855>Question 1136855</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The waiting time until a customer is served at a fast food restaurant during lunch hours has a skewed distribution with a mean of 2.5 minutes and a standard deviation of 0.4 minute. Suppose that a random sample of 47 waiting times will be taken. Compute the probability that the mean waiting time for the sample will be longer than 2.6 minutes.  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #754716 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=754716\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> t=(x bar-mean)/s/sqrt(n)<BR>\n" );
document.write( "t>(2.6-2.5)/0.4/sqrt(47)<BR>\n" );
document.write( "t>0.1*sqrt(47)/0.4<BR>\n" );
document.write( "t>1.71<BR>\n" );
document.write( "for df=46, that probability is about 0.095  </SPAN>\n" );
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