operations research question please solve ahowing how you solved An assembly line has three stations through which every unit being produced must pass in the same fixed order. The arrival of units follows a Poisson process for all stations. The mean time between arrivals is 8 minutes. The stations operate independently, and queues are allowed to form in front of each station. All stations have same mean processing time of 4 minutes. If processing time at each station has an exponential distribution The utilization rate of the second station is