this process, with a center line at 0.025 in. and the control limits set at three sigmas from the center line. Click the icon to view the table of factors for calculating three-sigma limits for the x-chart. Compute the mean, x, for each sample. (Enter your responses rounded to two decimal places.) The UCLequals minutes and the LCLxequals minutes. (Enter your responses rounded to two decimal places.) this process, with a center line at 0.025 in. and the control limits set at three sigmas from the center line. Click the icon to view the table of factors for calculating three-sigma limits for the x-chart. Compute the mean, x, for each sample. (Enter your responses rounded to two decimal places.) The UCLequals minutes and the LCLxequals minutes. (Enter your responses rounded to two decimal places.)