1. Should the control plan focus on the inputs or outputs of the process? Justify your response.
2. Is too little variation in a process necessarily a good thing? Explain your response.
3. Assume you observe five consecutive observations of a process output that are inside the control limits but are all in one side of the mean line in a SPC chart.
   1. Calculate the probability that such event will happen if the process is still in control.
   2. Should this event raise a concern? Why?
4. How does Kanban set limit on production? What waste does it eliminate?
5. How can you apply one-piece flow in doing your homeworks?