Question: 3. (5 points) The Shewhart control chart for mean has UCL = 68.1 and LCL= 67.95. Find CL a) standard deviation, assuming that it's typical


3. (5 points) The Shewhart control chart for mean has UCL = 68.1 and LCL= 67.95. Find CL a) standard deviation, assuming that it's typical (most popular in USA ) type of chart. b) 0.005 probability limits for this chart
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