Question: Control charts for X-bar and Range (R.) are maintained on the resistance in ohms of electrical part. The size of the samples is 5. After

Control charts for X-bar and Range (R.) are maintained on the resistance in ohms of electrical part. The size of the samples is 5. After 6 samples, the sum all sample means is 2046.5 ohms and the sum of all samples ranges is 17.4 ohms. Upper control limits of Rand X-bar, respectively are a. 6.96 and 410.97 O b. 6.96 and 342.76 O C. 6.12 and 342.76 O d. 6.96 and 407.63 O e. 6.12 and 410.97 O

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