15-1. Discuss why operations and products are important, distinguishing between manufacturing and service operations. 
15-2. Compare the differences among operations systems with respect to tangibility of products, levels of customer involvement, operations flexibility, and management of resources and technology.
15-3. Explain the four facility layouts in terms of their level of customer involvement and flexibility; provide an example of each.
15-4. Describe the three planning schedules, supply chain management, and quality control.
15-5. Recall how to measure productivity and list three ways to increase it.