Q 3-2-3. Between Department A and B, which one will be busier? Will both departments be stable in the long run? Q 3-2-4. Please find the average number of SKUs in Departments B(L2) and the average time that each SKU spent in Department C(W3). Q 3-2-5. Find (1,2,1,0). Please explain what this value means. Hint: (IR)1=1.31.621.41.030.291.880.980.870.321.361.821.180.150.890.581.47 Consider an M/M/1 system. The inter-arrival time follows Exponential Distribution with an average of 20 mins, while the service time follows Exponential Distribution with an average of 15 mins? Problem 3-2 (Queueing Network) - 10 points. Consider the following Queueing network. There are three receiving points at Departments A, B, and C and two shipping points at Departments B and D, respectively