document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1120107>Question 1120107</A>: <I><SPAN STYLE=\"word-break: break-all;\"> the average arrival rate of persons in a queue is 1.5 per hour. what is the probability that at most 20 will arrive during an interval of 6 hours? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #735775 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=735775\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> This is a Poisson distribution and is proportional to time.  Here, the relative unit of observation is 6 hours.<BR>\n" );
document.write( "With a parameter of 9 (for 6 hours), what is the probability the value will be no more than 20.<BR>\n" );
document.write( "This is 0.9996.\r<BR>\n" );
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