What benefits do psychological approaches to waiting lines have over other approaches?

Chapter 18Q1 What benefits do psychological approaches to waiting lines have over other approaches? (150 words)Q2 Why do waiting lines form even though a service system is underloaded? (150 words)Q4 What effect would decreasing arrival and service variability have on the effective capacity of a system? (150 words)2 references Chapter 19Q1 for which decision environment is linear programming most suited? (150 marks)1 references