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A buyer wants to compare the cost (in dollars) of airline tickets purchased one day in advance to purchased 30 days in advance for flights from New York (JFK) to San Francisco for various airlines. Use a 0.01 significance level to test the claim that flights scheduled one day in advance cost more than flights scheduled 30 days in advance. A computer is used and it is found that the P-value = 0.0016. What can you state about the sample (independent or dependent) and what can you conclude about the evidence?

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