Classify each of the following quality- related costs as prevention costs, appraisal costs, internal failure costs, or external failure costs.
1. Incremental cost of using a higher- grade raw material
2. Training employees
3. Lost productivity due to machine breakdown
4. Inspecting incoming raw materials
5. Warranty repairs
6. Repairing defective units found
7. Legal fees from customer lawsuits
8. Inspecting products that are halfway through the production process
9. Redesigning the production process
10. Cost incurred producing and disposing of defective units S4- 13