10. Dr. Barari wants to reduce the waiting times in her office. Six random observations of times spent between arrival and exam were made over a period of 17 days.

a. Develop the appropriate chart(s) and determine whether the process is in control

b. If patient surveys indicate that they are willing to wait between 10 and 30 minutes before seeing Dr. Barari, is the process capable? Assume a process standard deviation of 2.5 minutes.