Final answer:
The statement is false because the primary focus of lean systems in services encompasses more than just the time needed to perform a service; it includes maximizing customer value and minimizing waste in various forms.
Step-by-step explanation:
The question asks whether in services, the primary focus of lean systems is the time needed to perform a service. The statement is False. While reducing the time to perform services is indeed an important aspect of lean systems in the service sector, it is not the sole primary focus. Lean principles in services aim to maximize customer value while minimizing waste. This means streamlining processes, eliminating non-value-adding activities, improving quality, and reducing costs, in addition to improving time efficiency. Therefore, the primary focus is more comprehensive than just the time aspect.