A process that is considered to be in control measures an ingredient used in mixing a chemical compound in ounces. Below are the last 10 samples. The process standard deviation is 1.1
Samples
1	2	3	4	5	6	7	8	9	10
10	9	13	10	12	10	10	13	8	10
9	9	9	10	10	10	11	10	8	12
10	11	10	11	9	8	15	12	12	9
9	11	10	10	11	12	12	10	12	8
12	10	9	10	10	9	11	11	9	12
1) Construct a 99% confidence control charts for the process mean and range.
2) Based on the charts, can you conclude that the process is in control? Why did you say so?
3) If you conclude that the process was out of control at any time during the period of observation
explain what needs to be done (e.g. what needs to be investigated, and what corrective action you might suggest)