Question 822265
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Hi,
<u>POISSON Distribution</u> P(x; &#956;) = (e^(-&#956;) (&#956;^x) / x! where  &#956;  is the average number of successes  
x is the actual number of successes that result from the experiment, e  approximately equal to 2.71828. 
for ex: &#956;  = 6   P(x = 4) = {{{e^(-6)(6^4)/4!}}} 
It has been observed that in any given hour 36 people cross a street (6 in ten minutes)
Using Ti Calculator functions:
a. More than 3 people cross the street? Ti: 1- poissioncdf(6, 3)
b. Exactly 4 people cross the street? poissionpdf(6, 4) 0r P ={{{e^(-6)(6^4)/4!}}}  
c. 6 or fewer people cross the street? poissioncdf(6, 6)
d. 2 or more people cross the street? 1- poissioncdf(6, 1)