I need help with these questions, don't think you'll need the book but if you do the book is called " supervisory management" it's the 2015 edition

1. Explain what happened to U.S. productivity in2007. 2. Do you believe management and unions must always be on opposite sides of the productivity issue? Why or why not? 3. Identify some of the steps supervisors can take to improve their department's productivity. 4. How does quality control differ from total quality? Explain. Describe the role of variance in controlling quality. 5. Identify each of the following tools for controlling quality: Pareto chart, run chart, and flowchart. 6. Explain the supervisor's role in supporting lean concepts. 7. What does OSHA do? 8. Describe some ways supervisors impact safety performance