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One of New England ? ?Air's top competitive priorities is ? ?on - time arrivals. Quality VP Clair Bond decided to personally monitor New England

One of New England ? ?Air's top competitive priorities is ? ?on - time arrivals. Quality VP Clair Bond decided to personally monitor New England ? ?Air's performance. Each week for the past 3 0 ? ?weeks, Bond checked a random sample of 1 0 0 ?flight arrivals for ? ?on - time performance. Sample ( week ) ?Late Flights Sample ( week ) ?Late Flights
1 4 1 6 3
2 3 1 7 2
3 1 1 1 8 1 1
4 2 1 9 3
5 1 2 0 1
6 2 2 1 3
7 6 2 2 1 7
8 6 2 3 4
9 1 0 2 4 2
1 0 0 2 5 2
1 1 2 2 6 1
1 2 3 2 7 0
1 3 1 2 8 2
1 4 2 2 9 4
1 5 7 3 0 5
Using a ? 9 5 % ?confidence ? ?level, the upper and lower control limits ? ?are:

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