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A factory uses an X-bar chart to keep track of the average performance of its process output. The factory considers 94% of the variation
A factory uses an X-bar chart to keep track of the average performance of its process output. The factory considers 94% of the variation in the output to be due to purely random factors and should fall within the control limits. What is the corresponding z-value for these control limits? 1.555 1.881 2.326 2.753
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