Aria has a credit card that gives a 5% discount on every purchase and free shipping when used online. The annual percentage rate on the credit card is 18%. Aria wants to buy a doghouse that costs $580. Which statement about the
cost of the doghouse is true

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.