A process at Amit Eynan Bottling Company that is considered in control measures liquid in ounces. Below are the last 12

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A process at Amit Eynan Bottling Company that is considered incontrol measures liquid in ounces. Below are the last 12 samplestaken. The sample
size=4.
                                                                                                                                                                  
1
2
3
4
5
6
7
8
9
10
11
12
20.2
19.9
19.8
20.1
19.8
19.7
20.2
20.1
20.0
19.9
20.1
19.9
20.1
19.9
19.9
19.9
20.1
19.6
20.1
20.1
19.9
19.8
20.1
19.4
19.8
19.7
20.0
19.9
20.1
19.7
19.9
19.8
20.1
20.1
19.8
19.7
19.9
20.1
20.1
19.8
19.9
19.4
19.9
19.7
19.8
19.9
19.9
19.8
Part 2
​a) Set control limits for this process for the x​-chart.