8. Daily inspection results for the model 305 electric range assembly line are given in the following table.

Determine trial control limits for each subgroup. Assume that any out-of-control points have assignable causes, and determine the standard value for the fraction nonconforming for December.

Transcribed Image Text:

Date and Shift Number Inspected Number Nonconforming Date and Shift Number Inspected Number Nonconforming Nov. 81 171 31 Nov. 17 I 165 16 II 167 91 170 II 135 101 137 II 170 111 45 II 155 11 121 195 II 180 151 181 II 115 161 165 II 189 6833325 II 170 35 181 175 12 13 II 167 6 191 141 50 30 II 159 26 221 181 16 II 195 38 30 23 I 165 33 II 140 21 241 162 18 II 191 22 25 I 139 16 15 II 181 27