2. Exercise 8.17 (Algorithmic) The International Air Transport Association surve

Question

2. Exercise 8.17 (Algorithmic) 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 ratings obtained from the sample of 50 business travelers follow 8 6 10 8 10 8 8 4 0 5 4 443 10 4 3 2 789 3 8 9 95 3 5 5 3 3 10 0 8 5 10 4 10 Develop a 95% confidence interval estimate of the population mean rating for Miami. Round your answers to two decimal places. Enter your answer using parentheses and a comma, in the form (n1,n2). Do not use commas in your numerical answer (i.e. use 1200 instead of 1,200, etc.)

Explanation / Answer

The statistical software output for this problem is:

One sample T confidence interval:
: Mean of variable

95% confidence interval results:

Hence,

95% confidence interval will be:

(4.97, 6.51)

Variable Sample Mean Std. Err. DF L. Limit U. Limit Data 5.74 0.38205673 49 4.9722283 6.5077717

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