The River Rock Company sells 400-pound bags of decorative rocks for landscaping use. The current bagging process yields samples with )=( and values of 400 pounds and 15 pounds, respectively, Each sample consists of 10 observations. Develop the appropriate control charts. Click the icon to view the values of the A2, D3, and D4 constants. Upper Control Limit (UCL)-() = 403.72 . (Enter your response rounded to two decimal places.) More info Sample Size M 2