The U.S. Department of Transportation tracks and reports a wide variety of information regarding airlines and airports. It reports the €œpercent on-time€ frequently. Compare the percent on-time arrival performance for the 31 major airports in the United States for the year to date through October 31, 2008, versus the year to date through October 31, 2009.

At the 0.05 level of significance, test the claim that there is no correlation between the 2008 year-to-date and the 2009 year-to-date percent on-time arrival performance at these airports.

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Ranking of Major Airport On-Time Arrival Performance Year-to-Date through October 2009 (Percent On-Time anu anua 1-October 1-October Rank % Rank 31, 2009 84.43 Sa lake 81.40 2 Chcago, IL 81.33 3 Poeníx, 31, 2008 Salt lake 85.63 City, UT ISLO) City, UT ISIC 2 Phoenix, AZ IPHX) 3 Chicago 84.15 83.65 AZ IPHX