document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1122236>Question 1122236</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Hits on a new business website occur quite frequently. They occur randomly and independently with an average of 6 per week.Find the probability that the site gets more than 3 hits in a week. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #738325 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=738325\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> This is a poisson variable with parameter 6.<BR>\n" );
document.write( "Greater than 3 is 1-P(0, 1,2,3)<BR>\n" );
document.write( "can look it up but can do mathematically.<BR>\n" );
document.write( "e^(-6)6^0/0! so for x=0 prob=0.0025<BR>\n" );
document.write( "e^(-6)*6^1/1!, so for x=1 prob is 6 times that or 0.0149 rounding at end only.<BR>\n" );
document.write( "e^(-6)*6^2/2!, so for x=2 prob is 18 times more than prob 0 or 0.0446<BR>\n" );
document.write( "e^0-6)*6^3/3!, so for x=3 prob is 36 times more than prob 0 or twice that of prob 2 or 0.0892<BR>\n" );
document.write( "Those add to 0.1512 when rounded appropriately. Table gives 0.1512.<BR>\n" );
document.write( "The answer is the complement or 0.8488. </SPAN>\n" );
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