17.7-3. Consider the following statements about an MIG/1 queue- ing system, where o? is the variance of service times. Label each statement as true or false, and then justify your answer. (a) Increasing o? (with fixed and pe) will increase L, and L, but will not change W, and W. (b) When choosing between a tortoise (small u and o?) and a hare (large u and o?) to be the server, the tortoise always wins by providing a smaller La (c) With , and pe fixed, the value of Le with an exponential service- time distribution is twice as large as with constant service times