Houseman, Inc. anticipates sales of 50,000 units, 48,000 units, 51,000 units and 50,000 units in July, August, September and October, respectively. Company policy is to maintain an ending finished-goods inventory equal to 40% of the following month's sales. On the basis of this information, how many units would the company plan to produce in September

Statistical process control charts: a. indicate to the operator the true quality of material leaving the process. b. display upper and lower limits for process variables or attributes and signal when a process is no longer in control. c. indicate to the process operator the average outgoing quality of each lot. d. display the measurements on every item being produced. e. are a graphic way of classifying problems by their level of importance, often referred to as the 80-20 rule.