Answer:
Arrivals
Step-by-step explanation:
The poisson probability distribution, treats the probability of an event as being discrete, independent and continous.
For a distribution of mean, μ, occurrence of x is given by:
P(x = x) = (μ^x * e^-μ) / x!
For the queuing theory, the arrival is independent and discrete, with a mean rate of λ rate of arrival. We can determine how many customers are expected to arrive within a specified period of time using the above stated relation.