Zagat surveys airline customers on a 30 point satisfaction service, and food for

Question

Zagat surveys airline customers on a 30 point satisfaction service, and food for both domestic and international flights. The following survey results were collected between September 21 and October 10, 2010, and show the average score for various airlines. Compute the correlation coefficient and test its significance at alpha = 0.01. Using alpha =0.01, perform a hypothesis test to determine that there is a positive linear relationship between scores for domestic and international flights. Using alpha =0.01, perform a hypothesis test to determine that scores for domestic flights are useful in predicting scores for international flights.

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Zagat surveys airline customers on a 30 point satisfaction service, and food for

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