Question: (1.) What is the point estimate for the difference between the fraction of flights out of PDX run by Southwest (WN) and the flights out

(1.) What is the point estimate for the difference between the fraction of flights out of PDX run by Southwest (WN) and the flights out of PDX run by Alaska (AS)? Please show answer in a complete sentence and/or show your work.

PDX run by Southwest = 471

PDX run by Alaska = 1404

Total flights out of PDX = 4517

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