An airline company uses a central telephone bank and a semi-automated telephone process to take reservations. It has been receiving an unusually high number of customer complaints about its reservation system. The company conducted a survey of customers, asking them whether they had encountered any of the following problems in making reservations: busy signal, disconnection, poor connection, too long a wait to talk to someone, could not get through to an agent, connected with the wrong person. Suppose a survey of 744 complaining customers resulted in the following frequency tally.
Number of Complaints . Complaints
184 ......... Too long a wait
10 ........ Transferred to the wrong person
85 .......... Could not get through to an agent
37 ......... Got disconnected
420 .......... Busy signal
8 ........... Poor connection
Construct a Pareto chart from this information to display the various problems encountered in