3. A software company develops computer codes for a wide range of industrial applications. On each day, the modules developed are tested using a diagnostic tool that can identify code errors. Since the size of the modules is variable, a module can not be used as identifying unit. Therefore, the company decided to control the code errors on a daily basis, having gathered the data shown in Table 1 to establish the process standard. Tabela 1: Code errors detected per day. Day Errors Day Errors 1 2 3 4 5 11 12 13 43 36 22 39 60 54 30 39 26 61 Lines of code 8766 5605 5825 8389 9715 8263 5436 8431 5509 10258 14 15 16 17 54 73 33 36 49 51 45 50 40 52 Lines of code 9811 10304 6109 7735 10038 10989 10221 8756 6330 9245 6 7 8 9 10 18 19 20 a) Which control chart (s) do you propose to control the process described above? Justify conveniently your choice. b) Tune the control charts(s) indicated in a)