The Door Company manufactures doors. Classify each of the following quality costs as prevention costs, appraisal costs, internal failure costs, or external failure costs.
Retesting of reworked products
Downtime due to quality problems
Analysis of the cause of defects in production
Depreciation of test equipment
Warranty repairs
Lost sales arising from a reputation for poor quality
Quality circles
Rework direct manufacturing labor and overhead
Net cost of spoilage
Technical support provided to suppliers
Audits of the effectiveness of the quality system
Plant utilities in the inspection area
Reentering data because of keypunch errors