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 business travelers is selected and each traveler is asked to provide a rating for the Miami International Airport. The ratings obtained from the sample of business travelers follow. Excel or Minitab users: The data set is available in the file named "Miami."
7 7 3 8 4 4 4 5 5 5 5 4 9
1 0 9 9 8 1 0 4 5 4 1 0 1
0 1 0 1 1 4 9 7 5 4 4 5 5
4 3 1 0 1 0 4 4 8 7 7 4 9
5 9 4 4 4 4
Develop a confidence interval estimate of the population mean rating for Miami.