The following table shows real arrival data for two airlines in five cities (airline names have...

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The following table shows real arrival data for two airlines in five cities (airline names have been changed). Excelsior Airlines Paradise Airlines % On Number of % On Number of Destination Time Arrivals Time Arrivals Los Angeles Phoenix 88.9 559 85.6 811 94.8 233 92.1 5255 San Diego 91.4 232 85.5 448 San Francisco 83.1 605 71.3 449 Seattle 85.8 2146 76.7 262 Total 3775 7225 a. Which airline has the higher percentage of on-time flights to the five cities? b. Compute the percentage of on-time flights for the two air-lines over all five cities. c. Explain how the data illustrate Simpson's paradox. The following table shows real arrival data for two airlines in five cities (airline names have been changed). Excelsior Airlines Paradise Airlines % On Number of % On Number of Destination Time Arrivals Time Arrivals Los Angeles Phoenix 88.9 559 85.6 811 94.8 233 92.1 5255 San Diego 91.4 232 85.5 448 San Francisco 83.1 605 71.3 449 Seattle 85.8 2146 76.7 262 Total 3775 7225 a. Which airline has the higher percentage of on-time flights to the five cities? b. Compute the percentage of on-time flights for the two air-lines over all five cities. c. Explain how the data illustrate Simpson's paradox.

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