Central Limit Theorem -- Dickeson

There are issues beyond the number of sigmas to use to validate workflow predictions. Questions such as, "Is the process capable of producing at predictable speeds at all?" must be answered. Or, "Is the process under control?" Statistical methods exist to make these determinations. We may be shocked to learn the answers. And, perhaps some scholar should consider whether we're justified in using the Central Limit Theorem to establish control limits for net rates of speed and activity time applied to makereadies.