Question 7
The number of vehicles passing through a highway toll booth in a minute follows a Poisson distribution with mean λ = 4. Find the probability that at most two vehicle pass through highway toll booth in a minute. Enter the answer correct to two decimal places. (Use : e⁴ = 54.60, e^(1/4) = 1.28, e⁻⁴ = 0.02, e^(-1/4) = 0.78)