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i.
2. Alabama Airlines provides commuter service. As a product of airline deregulation, Alabama Air joined the growing number of short-haul, point-to-point airlines, including Lone Star, Comair, Atlantic Southeast, and Skywest. Alabama Air was started and managed by two former pilots, David Douglas and Michael Hanna. One of Alabama Air’s top competitive priorities is on-time arrivals. The airline defines “on-time” to mean any arrival that is within 20 minutes of the scheduled time.
a. In this case, which quality control chart(s) will be appropriate for quality control and improvement?
b. Construct the control chart(s) you have specified in part (a).
c. For the next five weeks, Mike continues to sample the flights and observes that the number of late flights are 11, 9, 4, 12, and 8, respectively. What can Mike

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