Final answer:
The recommended production technology for staffing per machine is not explicitly stated, but it is advised that a firm select technology that offers the lowest total cost, typically favoring more machines and fewer workers.
Step-by-step explanation:
The question regarding the best practice for staffing per machine seems to be related to optimizing the production technology within a business context. The information provided indicates that different production technologies have varying numbers of workers and machines, such as Production Technology 1 with 10 workers and 2 machines, and Production Technology 2 with 7 workers.
The recommendation is that a firm should choose Production Technology 3 since it presumably presents the lowest total cost, showcasing a shift towards utilising more machines and less labor where machine hours are cheaper. While the specific staffing ratio per machine for the suggested Production Technology 3 is not provided, the International Association of Counseling Services recommends a staffing ratio elsewhere of one full-time equivalent staff member for every 1,000 to 1,500 students, which serves as a guideline for optimal staffing levels in a different context.