SOLUTION: Given that x has a Poisson distribution with u=1.8 what is the proability that x=0

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Question 841319: Given that x has a Poisson distribution with u=1.8 what is the proability that x=0
Found 2 solutions by Edwin McCravy, ewatrrr:
Answer by Edwin McCravy(20065)   (Show Source): You can put this solution on YOUR website!
Suppose we can expect some event to occur l times over some interval of time.  
Then the probability that the event will occur exactly x times during a span
of that same length of time is given by this formula:

P(x;l)

where  and 

Just substitute in the formula:

P(0;1.8)

Any number to the zero power is 1 and zero factorial is 1, so

P(0;1.8)

Edwin
Answer by ewatrrr(24785)   (Show Source): You can put this solution on YOUR website!
 

Hi,

POISSON Distribution 

P(x; μ) =    where  μ  is the average number of successes  

P(x = 0) =   16.53% 

0r TI:  poissonpdf(mean, x-value)= poissonpdf(1.8,0) 

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