TABLE 17-9 The Manufacturer of Cat Food Constructed Control Charts and Analyzed

question 69

Short Answer

TABLE 17-9
The manufacturer of cat food constructed control charts and analyzed several quality characteristics. One characteristic of interest is the weight of the filled cans. The lower specification limit for weight is 2.95 pounds. The table below provides the range and mean of the weights of five cans tested every fifteen minutes during a day's production.

-Referring to Table 17-9, an R chart is to be constructed for the weight. One way to create the upper control limit involves multiplying the average of the sample ranges by D₄. For this data set, the value of D₄ is ________.

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