a) Calculate the control limits and center line based on the following data. b) Draw the control charts and show the samples on the charts. c) Is the process under control? Sample No 1 2 3 4 5 6 7 8 9 10 1 2 3 S 4 x 8,47734 6,63104 4,83471 6,52917 6,618065 1,488324 6,42168 3,56797 3,66702 1,96806 3,906183 1,848931 3,54632 4,90492 3,92355 4,34624 4,180258 0,583227 5,96669 3,8577 5,87166 2,34354 4,509898 1,741179 7,19351 17,5756 9,65643 4,34535 9,692723 5,685699 3,86751 2,46275 6,28137 2,14929 3,69023 1,882077 7,08234 7,04396 4,73154 3,67475 5,633148 1,706729 4,19363 5,12081 5,15707 3,97751 4,612255 0,614709 7,01631 4,33245 4,74851 9,65434 3,454556 2,447244 6,02172 6,03645 6,596755 1,165741 8,34505 5,9838