New PMP Question & Answers with explanation

James has been managing a hotel construction project on a busy street. He is in the process of estimating activity durations for building walls, and he calculates the most likely estimate as 15 days. If prefabricated material is used, it would take no more than 12 days to finish the work. The work may be delayed and could take up to 18 days if less experienced construction workers build the walls. What is the expected duration of building walls using the three-point estimate?
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You are working as a project manager for a wind-powered vehicle manufacturing project which is in its planning phase. You carefully gathered all your requirements from your key stakeholders and prepared a system requirements specification and project requirements specification. While presenting your specifications to the project team, an enthusiastic project team member started talking about the duration estimates for each activity. Which of the following statements indicates your response to your team member?
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In a textile manufacturing project, a team divided the project work into 35 work packages and assigned a few work packages to the design department for review. After the review, the manager of the design department requested that the team further divide the work packages into more manageable work components for estimating and scheduling resources. Which of the following techniques should the team use to satisfy the manager's request?
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Jane is worried about her project because many of her tasks are moving slowly, and two critical tasks may slip. She conducts a thorough resource analysis and finds out that there are five people who will be free next week. She would like to assign those people to finish her tasks early and prevent the project completion date from slipping. This is an example of:
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A project manager is estimating the project duration and finds that the only information available to him is a previous project that was quite different from the current one. However, some portions of the previous project were similar to the current one. Which of the following tools is the project manager likely to use to compare current project's activity durations with the similar previous activities?
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