The table contains data for room turnaround time by the cleaning staff at the BlackJack/Simpson clinic. Sixty-two trials were conducted with three samples apiece. The clinic manager has heard of a technique called statistical process control and would like to use it to see if the clinic’s room turnaround process is in control. 

• Develop an x-bar and R chart for the data, and comment on whether the process is in control or out of control.
• What does “a process is out of control” mean?