The assumption that arrivals follow a Poisson probability distribution is equivalent to the assumption that the time between arrivals has a normal probability distribution an exponential probability distribution a uniform probability distribution a Poisson probability distributiona. a normal probability distributionb. an exponential probability distributionc. a uniform probability distributiond. a Poisson probability distribution Solution The assumption that arrivals follow a Poisson probability distribution is equivalent to the assumption that the time between arrivals has b. an exponential probability distribution.