New PMP Question & Answers with explanation

What percentage of the total distribution are 3 sigma from the mean equal to?
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If a project manager focuses on ensuring that the project satisfies the needs for which it was undertaken, the project manager is involved in:
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What might historical records from previous projects used as an input to activity definition include?
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All of the following are examples of the cost of nonconformance except:
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A project manager is using a cause and effect diagram with the team to determine how various factors might be linked to potential problems. In what part of the quality management process is the project manager involved?
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