Introduction - If you have any usage issues, please Google them yourself
Queuing theory produce exponential distribution of inter-arrival time, Mean 0.25, 0.5, 1, 2 1. Cumulative distribution statistics and draw the curve with its theoretical curve 2. Each unit of time is 1, 2, ... 20 units, respectively, each time statistics the arrival of the number of units, and draw Pn (t) vs t and its theoretical value, n take 0,1,2,3,4,5, λ is 0.5.