Sample Hour 1 2 3 4 5 R 1 101 100 X 100 99 100 100 2 95 N 97 120 96 86 98.8 34 3 100 85 98 89 97 93.8 15 105 120 100 80 4 5 101 101.2 40 99 88 114 86 97 96.8 28 6 109 112 90 104 114 105.8 24 7 86 83 99 98 106 94.4 23 8 100 117 103 93 90 100.6 27 9 94 102 96 97 94 96.6 8 10 120 95 100 97 91 100.6 29 a) Determine the upper and lower X and R control chart limits. b) Do the data indicate a process that is in control? Why? c) Process engineering department has conducted experiments and determined that specification limit is 102+5. Calculate Cp of this process