To avoid the problem of inaccurate cost estimation, as indicated by a CPI of 0.65, bottom-up estimating should have been used. This method involves estimating the cost of individual tasks in detail and then aggregating them to arrive at a total project cost. It is more accurate than analogous estimating because it considers the specific details of the current project rather than relying on the cost data of past projects, which may not be directly applicable. Bottom-up estimating allows for a more granular and accurate assessment of the project's financial requirements.
References:
* Project Cost Management According to the PMBOK1
* Estimating errors - Project Management Institute2
* 7 Tips for estimating your projects - Project Management Institute3

Explanation/Reference:
Explanation:
The requirements management plan defines how requirements will be analyzed, documented, and managed. It is strongly influenced by the phase-to-phase relationship. The project manager selects the most effective relationship for the project and documents it in the plan.

The project manager should prioritize removing barriers that impede team performance and autonomy. This action aligns with the principles of agile project management, which emphasize empowering team members to make decisions and take ownership of their work12. By addressing the internal procedures that are hindering progress, the project manager can facilitate a more efficient and autonomous environment, allowing the team to focus on delivering value more effectively3.
References:
* PMI's resources on team building and the importance of removing barriers to enhance team performance1.
* Literature on expected behaviors for project team performance, which includes empowering team members and promoting autonomy2.
* Agile methodologies that advocate for team empowerment and the removal of impediments to improve project outcomes3.

The configuration management system is there to be sure that everybody on the team has the most updated version of all of the project documents. Whenever a project document is changed, it is checked into the Configuration Management System so that everyone knows where to go to get the right one.