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 productsDowntime due to quality problemsAnalysis of the cause of defects in productionDepreciation of test equipmentWarranty repairsLost sales arising from a reputation for poor qualityQuality circlesRework direct manufacturing labor and overheadNet cost of spoilageTechnical support provided to suppliersAudits of the effectiveness of the quality systemPlant utilities in the inspection areaReentering data because of keypunch errors

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