True.

Queuing theory is indeed a branch of mathematics that uses probability models to analyze waiting lines or queues. It helps in understanding various factors, such as arrival rates, service rates, and queue length, to optimize performance in systems where waiting is a factor.

Would you like more details on queuing theory or its applications? Here are some related questions you might find interesting:

1. What are the key components of a queuing system?
2. How does the arrival rate affect queue performance?
3. What are some common applications of queuing theory in real life?
4. Can you explain different types of queuing models?
5. How is queuing theory applied in network traffic management?

Tip: Familiarize yourself with basic terms in queuing theory, like "arrival rate" and "service rate," to better understand the models.