Question: 3. Software upgrade times(in minutes) are being evaluated. Samples of five observations have been taken and the results are listed. Inspection 1 0.34 0.99 0.98

3. Software upgrade times(in minutes) are being
3. Software upgrade times(in minutes) are being evaluated. Samples of five observations have been taken and the results are listed. Inspection 1 0.34 0.99 0.98 0.68 0.81 Inspection 2 0.36 0.90 0.82 0.58 0.69 Inspection 3 0.53 0.56 0.11 0.34 0.13 Inspection 4 0.03 0.93 0.77 0.43 0.18 Inspection 5 0.18 0.87 0.37 0.50 0.60 Inspection 6 0.05 0.63 0.85 0.75 0.76 a. Using the factors from table below determine the lower and upper bounds for mean chart and draw the control chart by pointing the average of each inspection on the chart. (10 points) b. Using the factors from table below determine the lower and upper bounds for range chart and draw the control chart by pointing the average of range for each inspection on the chart. (10 points) TABLE 10.3 FACTORS FORR CHARTS Number of Observations In Semple, Factors for three-signa control mits for X and charts Factor for Chart S A 1.88 1.02 0.73 0.50 0.48 0.42 6.37 0.34 10 0.31 11 0.79 12 0.27 12 0.25 14 0.74 15 0.22 16 6.21 17 0.20 18 0.19 19 0.19 0.18 Lower Cost Lint, D D 0 0 D D 0.00 314 0.16 0.32 036 0.28 031 0.33 0:35 0.36 0.38 0.39 0.40 0.41 Upper Control Limit D 327 2.57 2.28 2:00 1.92 130 182 1.74 1.72 1.00 1.67 1.65 164 1./12 161 1.60 1.50

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