Final answer:
As prevention and appraisal costs increase, other quality-related costs, especially failure costs, typically decrease as better quality prevention leads to fewer defects and failures.
Step-by-step explanation:
Typically, as prevention and appraisal costs increase, other costs of quality, such as failure costs (internal and external), are expected to decrease. This is because investments in prevention and appraisal are made to avoid failures and the high costs associated with them. As a result, while the initial costs for quality prevention and appraisal may rise, the overall costs of quality related to failures and defects should fall, improving quality and reducing the costs associated with poor quality products or services in the long run.