Which of the 7 QC Tools would be most useful in addressing each of the following situations? More than one tool may be useful, explain the reason.

a. A copy machine suffers frequent paper jams and users are often confused as to how to fix the problem.

b. The publication team for an engineering department wants to improve the accuracy of its user documents but is unsure why documents are not error free.

c. A bank needs to determine how many teller positions, drive through stations, and ATM machines are needed for a new branch in a certain busy location. Its information includes the average numbers and types of customers served by other similar facilities, as well as demographic information to suggest the level of customer traffic in the new facility.

d. A contracting agency wants to investigate why it has so many changes in its contracts. The company believes that the number of changes may be related to the dollar value of the original contract or the days between the request for proposal and the contract award.

e. A travel agency is interested in gaining a better understanding of how call volume varies by time of year in order to adjust staffing schedules.