please solve both

dentify all the statements below regarding control charts that are True: The key concept of rational subgrouping is that the variability within a sample should be minimized resulting in a homogenous sample If a process is in statistical control, it will never produce a unit outside of the control limits. Variable control charts work in pairs. One controls for the central tendency of the process while the other controls for the variation within the process A control chart is constructed based on acceptance sampling requirements Identify all the statements below regarding control charts that are False: Having data outside the control limits is the only criteria to confirm that a process is out of statistical control. A defective unit can have multiple defects The X bar and R chart should be used for variable data whose sample size is between 2 - 9. The primary objective of SPC is to remove all defective units from a production lot prior to shipment to the customen