If the answer can be configured using Excel formulas, please show how...

Sample	Mean	Range
1	7.1	.52
2	6.92	.48
3	7.25	.5
4	7.54	.51
5	7.21	.46
6	8.01	.55
7	7.8	.53
8	7.63	.49

Using factors from Table 10.3 determine upper and lower control limits for mean and range charters, and decide if the process is in control.

Table 10.3, above.

Number of Observations in Sample, n 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Factor for Chart, A 1.88 1.02 0.73 0.58 0.48 0.42 0.37 0.34 0.31 0.29 0.27 0.25 0.24 0.22 0.21 0.20 0.19 0.19 0.18 Lower Control Limit, D3 0 0 0 0 0 0.08 0.14 0.18 0.22 0.26 0.28 0.31 0.33 0.35 0.36 0.38 0.39 0.40 0.41 Upper Control Limit, D4 3.27 2.57 2.28 2.11 2.00 1.92 1.86 1.82 1.78 1.74 1.72 1.69 1.67 1.65 1.64 1.62 1.61 1.60 1.59