document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=359071>Question 359071</A>: <I><SPAN STYLE=\"word-break: break-all;\">  Emails arrive at the Dean's office at a rate of 4 per minute.\r<BR>\n" );
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document.write( "What is the probability that the Dean will receive 2 or more emails over the next minute?  (Hint:  you need to figure out P (x=0) and P(x=1) to get started.)<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 #256252 by </B><A HREF=/tutors/aboutme.mpl?userid=jrfrunner><B>jrfrunner(365)</B></A><img src=\"/images/stars/stars-10.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=jrfrunner><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=jrfrunner><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=256252\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> let <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=mu ALIGN=MIDDLE  ALT=\"mu\"   DISABLED_style= \"max-width:90%; height:auto;\" > = average rate per minute <BR>\n" );
document.write( "let X=number of emails received<BR>\n" );
document.write( "You need to realize that the situation you are describing follows a Poisson distribution<BR>\n" );
document.write( "P(x=a)=<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=mu%5Ea%2Ae%5E%28-mu%29%2Fa%21 ALIGN=MIDDLE  ALT=\"mu%5Ea%2Ae%5E%28-mu%29%2Fa%21\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "==<BR>\n" );
document.write( "given<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=mu=4 ALIGN=MIDDLE  ALT=\"mu=4\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=P%28x%3E=2%29=1-P%28x%3C=1%29=1-P%28x=0%29-P%28x=1%29 ALIGN=MIDDLE  ALT=\"P%28x%3E=2%29=1-P%28x%3C=1%29=1-P%28x=0%29-P%28x=1%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "--<BR>\n" );
document.write( "P(x=0)=<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=4%5E0%2Ae%5E%28-4%29%2F0%21=e%5E%28-4%29=0.01832 ALIGN=MIDDLE  ALT=\"4%5E0%2Ae%5E%28-4%29%2F0%21=e%5E%28-4%29=0.01832\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "P(x=1)=<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=4%5E1%2Ae%5E%28-4%29%2F1%21=4%2Ae%5E%28-4%29=0.07326 ALIGN=MIDDLE  ALT=\"4%5E1%2Ae%5E%28-4%29%2F1%21=4%2Ae%5E%28-4%29=0.07326\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "--<BR>\n" );
document.write( "can you finish this? </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );