New PMP Question & Answers with explanation

During a discussion with the quality department, Dave, a project manager, was told that as applied to projects, the terms “prevention” and “inspection” are synonymous. However, his understanding of the terms is different. What would you comment on this situation?
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In order to keep costs low, a project management team decided to apply statistical sampling while inspecting some of the work products. They decided to select 10 out of 50 engineering drawings for inspection. During which process should the sample be collected?
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Quality metrics used during the Control Quality process are defined during which process?
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A project involved development of a high-speed, hard disk drive. As part of its testing, the hard disk was subjected to continuous operation at a high speed and an elevated temperature. At the end of the test, the hard disk was destroyed beyond use. The cost of such testing is usually classified as:
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Which of the following quality control tools and techniques may not be used for root cause analysis?
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