Airline travelers often choose which airport to fly from based on flight cost. Cost data (in dollars) for a sample of flights to eight cities from Dayton Ohio and Louisville Ky. Were collected to help determine which of the two airports was more costly to fly from (The Cincinnati Enquirer, February 19, 2006). A researcher argues that it is significantly more costly to fly out of Dayton than Louisville. Use the sample data to see whether they support the researchers argument. Use ± = .05) as the level of significance.
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