The following numbers of robberies were reported during the last 10 days to the robbery division of

Question:

The following numbers of robberies were reported during the last 10 days to the robbery division of the Metro City Police: 10, 8, 8, 7, 8, 5, 8, 5, 4, and 7. Develop an appropriate control chart. Determine the mean number of robberies reported per day and determine the control limits. Are there any days when the number of robberies reported is out of control?