An average of 1.4 private airplanes arrive per hour at an airport.

Question

Let x denote the number of private airplanes that will arrive at this airport during a given hour. Calculate the probability distribution of x.

Find the probability that x = 4.

Answer 1

Using a Poisson distribution:

P(x) = (e^-μ) (μ^x) / x!

e = 2.71828
µ = 1.4
x = 4

Substitute and calculate.