During a project's execution phase, a customer requests additional features that will affect the project schedule. What should the project manager do?

You are trying to determine whether or not to conduct 100% final system tests of 500 ground-based radar units at the factory. The historical radar field failure rate is 4%; the cost to test each unit in the factory is
$10,000; the cost to reassemble each passed unit after the factory test is $2,000; the cost to repair and reassemble each failed unit after factory test is $23,000; and the cost to repair and reinstall each failed unit in the field is $350,000. Using decision tree analysis, what is the expected value if you decide to conduct these tests?

During a project team meeting, a team member suggests an enhancement that tans outside of the project charter. The project manager states that the team needs to concentrate on completing all required work.
Which action has the project manager performed?

You are working on a warehouse project when you realize that you may miss the due date of the project. What would you do in such a scenario?

A project manager working on a large-scale network implementation is frustrated with the hardware supplier. Their deliveries have been consistently late and frequently do not have vital components. The project manager's company has decided to cancel the contract and move to a new supplier, but the only other option is an overseas company.
What should the project manager do first to proceed with this change?