Question: Please explain where all numbers that were not given came from and please explain clearly . Thank you. A production process is sampled 24 items

Please explain where all numbers that were not Please explain where all numbers that were not given came from and please explain clearly. Thank you.

A production process is sampled 24 items with a sample size of 7 yields an overall mean of 25.7 and an average range of 0.8. The control limits for the x-bar are, A. UCL=27.0 & LCL =26.9 B. UCL = 26 & LCL = 24.4 C. UCL = 25.6 & LCL = 24.8 D. UCL = 26.2 & LCL = 24.8 E. None of the above

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