6.9. Table of 4 presents 20 subgroups of five measure ments on the critical dimension of a part produced by a machining process. a. Set up T and & control charts on this pro- cess Verify that the process is in statistical control b. Following the establishment of control charts in part (a) above. 10 new samples in Table 6F.5 were collected. Plot the Y and & values on the control chart you established in part (a) and draw conclusions c. Suppose that the assignable cause responsible for the action signals generated in part (b) has been identified and adjustments made to the process to correct its performance Plot the Table GE.4 Data for Exercise 6 9 Table BE.6 How Data for Exercise 6 9. part in 110.8 1387 137 4 125.4 130.1 270 1316 1431 1186 1032 1236 39% 1403 1421 1050 1340 92 3 1245 570 1110 1273 1504 810 5498 1967 128 1159 1356 1249 1550 117 4 291 129 8 1031 1325 1201 257 118.8 176.5 130.2 122 6 100.2 117 6 20 0 1452 132 8 1061 9315 902 1228 460 108 2 123.8 147.1 142 4 150 9 128 5 42 7 1148 1110 10 2 102.8 112.0 135.0 1350 1458 126.1 430 1252 664 1375 1975 5061 126 120.4 84.3 112.8 118.5 119.3 111.0 36 1 1459 1095 648 1798 3106 1161 818 132 7 151.1 124 0 1239 105 1 1274 46 0 1236 1540 212 1974 $128 123 136 4 126.2 1547 127 1 173.2 1425 46 9 258 143 1987 82 1530 1222 728 107 4 127 4 1250 1275 1272 413 10 135.0 115.4 1383 130.4 1336 357 11 139.6 127 9 151 1 143.7 110 5 1346 404 12 125.3 160.2 130.4 1524 165.1 146.7 13 145.7 101.8 1495 1123 151 8 132 4 14 138 6 139.0 1319 1402 141 1 1381 92 15 1101 1346 105.1 1128 1396 128.7 548 16 1452 101.0 1546 1202 117 3 1276 53.3 17 125 9 135.3 121.5 1479 105 0 127.1 18 129.7 130.5 109 0 1505 123.4 592 19 150.0 1616 1484 1542 1475 383 20 144 8 1383 1196 151 8 142 7 139 4 32 2 Table GE.5 Additional Data for Exercise 6.0. part tif 1310 184 8 1822 1433 2128 1708 81 1815 1932 180 7 1891 1743 1797 240 3 154 8 170.2 166.4 202.7 174.4 174.1 48.0 4 157 5 1542 1 1422 1619 1570 269 5 216 3 174 3 1662 155.5 1643 170.3 608 166 9 1902 1492 175.2 1850 1753 7 167 8 1439 1575 1718 1049 1672 610 B 178.2 1867 1424 1594 1076 1060 442 162 6 1436 1326 1689 1772 1570 445 10 172.1 191.7 2034 1504 1963 182.8 530 and R values from the new subgroups shown in Table 6E.6, which were taken following the adjustment. against the control chart limits estab- lished in part (a), What are your conclusions