Final answer:
In a restaurant, it is considered good service to check with a guest about their satisfaction with their meal 2-5 minutes after serving. However, in a campus restaurant setting with time-pressed students, a quicker check-in of approximately 2 minutes may be preferred.
.
Step-by-step explanation:
Typically, in a restaurant setting, it is considered good service to check in with a guest to determine if they're satisfied with their food and drink about 2-5 minutes after serving. This timing gives diners enough space to start their meal without feeling rushed but is timely enough to correct any issues swiftly. However, the context provided about students arriving at a campus restaurant during a time that's not a standard mealtime, like 2:30 pm, and appearing to be in a hurry indicates that efficiency and quick service are critical. In such scenarios, a slightly faster check-in, perhaps closer to the 2-minute mark, would likely be more appropriate.
As for the calculation-related questions, these seem to be mathematics problems disguised as business questions. For example, if one customer arrives every two minutes, it logically follows that it would take six minutes for three customers to arrive, based on the given arrival rate. These calculations are not directly associated with the satisfaction check-in but may relate to predicting busy periods and ensuring adequate staffing to perform such check-ins promptly.