Appropriate control limits for percentage of late flights

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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. The airlines' management has monitored the performance for the past 15 weeks. They checked a random sample of 100 flight arrivals each week for on-time performance. The table that follows contains the number of flights that did not meet Alabama Air's definition of on-time (this is a P chart, no need to draw the chart, only calculations).

Week 1 2 3 4 5 6 7 8 0 10 11 12 13 14 15

Late Flights 2 4 10 4 1 1 13 9 11 1 3 4 2 2 8

Using 2-sigma control limits, develop the appropriate control limits for the percentage of late flights.

Reference no: EM132108938

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