New PMP Question & Answers with explanation

At a critical milestone in a development project, it is determined that implementation is two months behind schedule. The project manager is concerned the root cause is lack of conformance to requirements in the design of the new billing system. More extensive measurements are taken to see if this is, in fact, the problem. Such measurements are:
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A project manager ¡s having problems with how two of the parts fit together on the new computer and the software uploads to the system. To plan a strategy for resolving these problems, it is best to determine if the problems are:
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Which of the following would generally lead to the least amount of quality improvement?
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Testing the entire population would
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You are working for a medical device company. These products are strictly regulated, and the potential cost of litigation if defective equipment were to reach market is very high. In your new product development, you have completed the product design, and are testing a small initial production test run. The defect rate is higher than estimated. You are looking at several alternatives including changes in design, changes in policy, changes in procedures, and changes in standards. In order to determine if these changes would provide a positive result, you will start by using
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