New PMP Question & Answers with explanation

Janet is the project manager for First Strike Engineering, a company that specializes in providing military devices for jet fighters. Her departmental projects usually require that all deliverables be within an accuracy of Six Sigma. Today, she received her first contract stating that the accuracy of the deliverable can be within One Sigma. What is the level of accuracy of One Sigma?
Select one
Which of the following is not a type of leadership style?
Select one
Which of the following best describes procurement audits?
Select one
Susan is the director of engineering for a software consulting company. She needs to hire seven people for a project that will be starting over the next month and has just filled out the roles and responsibilities of the positions and provided them to the human resources department. Which of the following is considered in the development of roles and responsibilities?
Select three
The project manager of a multiphased gaming project made a phone call to one of her virtual project team members abroad regarding an upcoming schedule activity that the team member was responsible for. The project manager notified the team member that due to an unplanned risk, a prototype would be built into the schedule, and it was important that her activity be completed according to the plan. The project manager noticed that the team member did not say much during the call, and she hoped that the team member understood. What did the project manager fail to do?
Select one