quality control

Problem 4: determine the X and R charts and the process capability of cypress bark bags in kilograms for the data below. Also determine the Cp and Cpk for a USL of 130 kg and an LSL of 75 kg (Chapter 6). Subgroup Number 1 2 3 4 5 6 7 8 9 10 11 12 13 14 X1 95 76 107 83 105 88 100 97 90 93 106 89 92 87 X2 90 81 80 77 93 76 87 91 91 79 97 91 83 90 X3 93 81 87 87 95 95 100 92 95 91 100 80 95 100 X4 120 83 95 90 103 97 103 94 101 94 90 82 75 98 15 16 17 18 19 20 21 22 23 24 25 97 82 100 81 98 78 91 76 95 92 92 95 106 95 94 101 96 91 91 97 99 85 95 99 95 97 87 100 87 106 100 97 90 90 101 90 90 89 72 89 80 93 94 90