Using a 3 sigma chart (both upper and lower control limits) and the process described above, the last several process samples taken have had the following means: 6'1" 6,5'11", 6:5'11" 6'1" 5'10", 5'11" 5'11" 5'11".5'11"5'11" 5'10" 5'11"5'11". Based upon just this information, you should: do nothing for now, still within the limits o have studied the chapter more stop the process and investigate for an out of control condition O adjust the process by 1- o none of the above Question 55 2.5 pts Plots of sample ranges indicate that the most recent value is below the lower controllimit. What course of action would you recommend? One value outside the control limits is insufficient to warrant any action Since there is no obvious pattern in the measurements, variability is in control Lower than expected range is a desirable condition, so there is no reason to be concerned and investigate Consistency (or precision) is not in control investigate for the assignable cause that created this seemingly desirable condition so that the process can be brought under control. The process is out of control; reject the last units produced