6. Tablets were made on six different tablet presses from ten available presses during the course of a run (batch). One tablet from each press were collected during each hour of the 4-hour run. The tablets were then assayed in random order. The results are as follows: Press Hour 1 2 3 4 5 6 47 49 46 49 47 50 48 48 48 47 50 50 AWNK 50 47 50 48 51 50 49 46 50 49 47 49 Is there any variation as a function of the press or the time? [25 marks] 7. Samples of weights were collected ( 5 samples per day ) for 40 days they are listed in the EXCEL file. Use this data to construct an Xbar and R chart for weights. State the LCL and the UCL Is the process in control? Given that the upper specification limit is 630 and the lower specification limit is 610, calculate the Cp and the Cpk. Take the target mean to be 620 ( rather than the actual mean of 620.54) Is the process capable? [25 marks] 8. Two methods were used to analyse the active ingredient in a range of tablets of different levels Use a test to determine whether there is a bias between the tests tablet a b C d E Method 1 1.0 2.4 5.1 7.5 9.8 Method 2 0.8 2.3 4.8 7.9 10.2 [25 marks]