A machine is working to a specification of 12.58 0.05mm. A study of 50 consecutive pieces shows the following measurements for 10 groups of sample: Construct -R chart and show the calculations. Find process capability 1 2 3| 4 5 6 7 8 9 10 12.54 12.58 12.61 12.57 12.57 12.58 12.6 12.65 12.6 12.65 12.57 12.6 12.61 12.60 12.59 12.62 12.57 12.59 12.61 12.58 12.6 12.64 12.56 12.62 12.59 12.61 12.57 12.6 12.6 12.62 12.6 12.58 12.59 12.61 12.56 12.67 12.56 12.63 12.62 12.56 12.61 12.64 12.59 12.58 12.57 12.6 12.61 12.56 12.62 12.59