The document explains the probability density function for the Poisson distribution, given by p(x) = (e^(-lambda))*(lambda^x)/factorial(x). It specifically calculates p(x=4) with a mean (lambda) of 7, resulting in a probability of 0.0912. The formula and calculation are reiterated for emphasis.

1. For Poisson distribution, probability density function is given as
P(x) = (e^(-lamda))*(lamda^x)/factorial(x)
Substituting x = 4 and mean, lamda = 7 we get
P(x=4) = 0.0912
Solution
For Poisson distribution, probability density function is given as
P(x) = (e^(-lamda))*(lamda^x)/factorial(x)
Substituting x = 4 and mean, lamda = 7 we get
P(x=4) = 0.0912