Question: The following are the numbers of imperfections in rolls of wallpaper made by Laura Ashley:
5, 6, 3, 4, 5, 2, 7, 4, 5, 3, 5, 5, 3, 2, 0, 5, 5, 6, 7, 6, 9, 3, 3, 4, 2, 6.
Construct a c chart for the process, and determine whether there is evidence that the process is out of control.