Question: 4. A new system was just implemented to process customer service calls. As a control method management randomly selects 5 calls each day and records

4. A new system was just implemented to process

4. A new system was just implemented to process customer service calls. As a control method management randomly selects 5 calls each day and records their overall call length. (35 points) a. What type of control chart(s) would work best for this instance? b. Compute the centerline as well as the upper and lower control limits using the data below. C. Construct the control chart or charts using the data below. Provide your interpretation regarding the presence of common cause and special cause variation, including any supporting rationale behind your assessment. Day Part 1 | 1 | 326.98 | 2 | 324.58 321.61 328.99 326.75 329.55 320.94 8 327.58 9 328.42 10 324.23 11 | 327.64 12 321.47 324.66 14 324.11 Part 2 Part 3 Part 4 Part 5 323.66 325.09 | 328.53 | 329.68 327.73 321.34 | 326.64 | 323.34 325.66 325.17 327.07 320.33 335.31 332.93 336.48 332.11 323.63 321.13 322.74 327.2 | 320.46 323.47 326.27 323.9 327.6 326.21 323.77 325.07 328.92 328.72 329.78 323.81 328.45 328.73 327.16 320.37 325.65 | 320.65 | 321.09 329.23 326.39 327.86 | 328.77 | 324.46 328.91 | 328.28 322.86 325.3 324.57 322.39 322.54 323.15 324.92 326.17 330.28 327.85 Day Part 1 Part 2 Part 3 Part 4 Part 5 16 330.32 329.17 332.67 329.66 325.13 17 319.54 324.36 322.09 326.3 319.71 18 328.1 332.29 327.88 331.59 324.84 19 325.86 325.98 322.36 329.6 321.56 20 329.01 327.22 329.88 320.19 327.4 21 328.72 326.56 320.88 321.91 324.71 329.33 | 323.19 326.6 | 323.46 | 321.89 23 324.15 325.38 328.45 326.39 321.42 329.62 321.3 | 328.46 | 321.22 324.08 324.59 322.7 | 329.47 | 322.57 | 322.82 26 | 329.15 325.33 322.76 | 322.71 | 320.04 328.35 324.98 320.83 320.4 328.42 28 326.6 | 321.49 328.67 | 329.81 | 324.42 29 325.23 325.51 328.76 323.96 326.7 22 24 25 27 13

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