Question: Twenty samples, with each sample consisting of 5 items, were randomly selected from a cereal manufacturer's process. If the average range value is 0.075 then

Twenty samples, with each sample consisting of 5 items, were randomly selected from a cereal manufacturer's process. If the average range value is 0.075 then the 3-sigma lower control limit for the R-chart for this process would be? choose the correct answer from here: 2.11 0.0 0.1583 0.75

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