Assume the Poisson distribution applies Use the given mean t

Assume the Poisson distribution applies. Use the given mean to find the indicated probability find P(6) when mu = 9.

Solution

Possion Distribution
PMF of P.D is = f ( k ) = e- x / x!
Where   
= parameter of the distribution.
x = is the number of independent trials
P( X = 6 ) = e ^-9 * 9^6 / 6! = 0.0911 ~ 0.09