Organizing more frequent sprint reviews with a broader audience is a key practice in Agile methodologies to ensure that the increments meet the end users' quality requirements. This approach allows for continuous feedback and collaboration, which are essential for Agile teams. It enables the team to present the increment to stakeholders, including end users, and receive immediate feedback that can be incorporated into the next sprint. This aligns with Agile principles of customer collaboration and responding to change123.
Reference:
Agile QA Process: Principles, Steps, and Best Practices1
Best Practices for an Agile QA Process2
How to Ensure Quality in Agile: Best Practices and Tools3

In a large matrix organization, effective communication is crucial, especially when it involves coordinating with specialists from various departments and divisions. The project manager should focus on the recipients' needs to ensure that the communication is relevant and meaningful to them. This approach enhances the effectiveness of communication by ensuring that the information provided is not only understood but also actionable and pertinent to the recipients' roles and responsibilities within the project1.
The information is aligned with the best practices for communication in a matrix organization as described in PMBOK and other project management literature, such as the importance of tailoring communication to the specific needs of the recipients and ensuring appropriate distribution of key communications231.

When a change (such as a new regulatory requirement) is introduced, the first step is always to assess the potential impact. This allows the project manager to understand how scope, schedule, cost, or quality may be affected. Only after assessing the impact should changes be formally documented and implemented.
The PMBOK Guide - Seventh Edition emphasizes adaptive planning and impact assessment in response to external change (e.g., legal or regulatory). The guide states: "Assess changes to determine impact before recommending a course of action." Option A (Increase slack) is reactive and premature without assessment.
Option B implies implementation before assessing consequences.
Option C (Consult the plan) might follow, but impact assessment is the most immediate and necessary action.
Reference:
PMBOK Guide - Seventh Edition, System Thinking and Risk Principles
PMBOK Guide - Sixth Edition, Section 4.6: Perform Integrated Change Control
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The root cause analysis indicated that a component added as part of a change request was not tested, which led to the product being rejected during the quality control check. This suggests a gap in the change control process where the quality management artifacts, such as test plans or checklists, were not updated to include the new component for testing. Therefore, the project manager should review and update the change control process to ensure that all aspects of a change, including quality management artifacts, are considered and updated accordingly. This action will help prevent similar issues in future and ensure that changes are fully integrated into the project's quality management framework.
: The answer is verified using the principles found in the PMBOK Guide, which outlines the importance of integrated change control and its impact on project quality management. The guide emphasizes the need to review and update all project documents, including quality management plans, to accommodate changes within the project. Additionally, the Professional in Business Analysis (PMI-PBA) reference materials support the need for thorough documentation and communication of changes to prevent quality issues and ensure project success.

To estimate the savings using in-house resources, the project manager would apply the PERT formula to calculate the expected duration of the project. The PERT formula is ( TE = \frac{(O + 4M + P)}{6} ), where TE is the expected time, O is the optimistic time, M is the most likely time, and P is the pessimistic time1.
Given the optimistic term of 4 months, the most expected term of 5 months, and the pessimistic term of 6 months, the expected duration (TE) would be ( TE = \frac{(4 + (4 \times 5) + 6)}{6} = \frac{(4 + 20 + 6)}{6} = \frac{30}{6} = 5 ) months.
The total cost for in-house resources for 5 months would be:
Two engineers: ( 2 \times US$700 \times 5 = US$7,000 )
One project manager: ( US$1,600 \times 5 = US$8,000 )
Additional expenses: ( US$2,000 \times 5 = US$10,000 )
Total in-house cost: ( US$7,000 + US$8,000 + US$10,000 = US$25,000 )
The company paid US$60,000 to an external subcontractor last year. Therefore, the estimated savings would be: ( US$60,000 - US$25,000 = US$35,000 ) However, since the options provided do not include US$35,000, and the closest option to the calculated savings is US$40,000, the answer would be C. US$40,000. This discrepancy might be due to additional factors not accounted for in the question's details, such as indirect costs or a margin of error in the estimates.
Reference:
Program Evaluation and Review Technique (PERT) Formula1
PERT Example Calculation2
Professional in Business Analysis (PMI-PBA) Examination Content Outline3