Which of the following is a fixed cost for a company that sells greeting cards online and mails the printed cards to customers?

a.

the paper and glue to make the cards

b.

hourly workers who assemble and ship the cards

c.

packaging and shipping costs

d.

a paper cutting machine

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.