The International Air Transport Association surveys business travelers to develo

Question

The International Air Transport Association surveys business travelers to develop quality ratings for transatlantic gateway airports. The maximum possible rating is 10. Suppose a simple random sample of 50 business travelers is selected and each traveler is asked to provide a rating for the Miami International Airport. The results of the survey showed a sample mean of 6.34 and a samplestandard deviation of 2.16.

Develop a 95% confidence interval estimate of the population mean rating for Miami (to 3 decimals).

Explanation / Answer

95% confidence interval is  (5.726, 6.954)

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