ASSESSMENT 2 Your company receives a request for a quotation from a very important cl ient. One of the requirements of the quotation is that the manufacturing process must be qualified. Your task is to perform a process capability study on a charging machine that weighs the propellant for a round of ammunition and then dispenses the propellant into each cartridge case. Twentyfive (25) subgroups of five (5) each are taken from the process (1 subgroup every hour). The following set of data is recorded for the charge mass of each sample drawn. Subgroups Individual Measurements gukBagiglp SUEQEZLPS 1.51 1.57 1.5 1.55 1.56 0.18 1 .54 1 .56 1 .54 1 .49 1 .55 0.1 3 1.6 1.57 1.58 0.18 1.52 1.61 1.45 1. 0.19 1.63 1.56 1.52 1. 0.14 1.66 1.55 1.62 1. 0. 1.58 1.64 1.57 1. 0. 1.51 1.55 1.58 1. O. 1 .6 1 .55 1 .58 1 . 0. 1 .54 1 .66 1 .6 1 . 0. 1.55 1.68 1.58 1. 0. 1.55 1.63 1.67 1. 0. 1.45 1.57 1.52 1. 0. 1 .66 1 .55 1 .58 1 . 0. 1 .57 1 .6 1 .52 1 . 0. 1 .62 1 .63 1 .56 1 . 1 .63 1.51 1 .66 1 . 1 .6 1 .61 1 .6 1 . 1 .54 1 .55 1 .57 1 1 .63 1 .56 1 .52 1 .59 0.16 1.67 1.55 1.52 1.56 0.18 1.61 1.51 1.58 1.57 0.11 1.61 1.55 1.56 1.53 0.16 1 .54 1 .54 1 .55 1 .57 0.10 1 .57 1 .55 1 .63 1 .58 0.09 )7 =1.575 5:13.13 3 Use this data to determine following: 1 . Calculate the control limits for X and R statistical control charts for this data. (12) 2 . Draw the X and R statistical control charts for this data. (12) 3. Determine the relative process capability for the process, given that the charge mass specification is: 1.6 + 0.2 gram. (6) [30] TABLE OF CONSTANTS 2 A2 D 3 D4 1. 128 1.883 O 3.267 1.693 1.023 O 2.575 2.059 0.729 O 2.282 OOVOO AWN 5 2.326 0.577 O 2.115 2.534 0.483 O 2.004 2.704 0.419 0.076 1.924 2.847 0.373 0. 136 1.864 2.970 0.337 O. 183 1.816 10 3.078 0.308 0.223 1.777