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 ratings obtained from the sample of 50 business travelers follow. 6 4 6 8 7 7 6 3 3 8 10 4 8 7 8 7 5 9 5 8 4 3 8 5 5 4 4 4 8 4 5 6 2 5 9 9 8 4 8 9 9 5 9 7 8 3 10 8 9 6 Develop a 95% confidence interval estimate of the population mean rating for Miami. (Round your answers to two decimal places.)

Answer 1

Answer:

M = 6.34, 95% CI [5.7468, 6.9332].

You can be 95% confident that the population mean (μ) falls between 5.7468 and 6.9332.

Step-by-step explanation:

Calculation

M = 6.34

Z = 1.96

sM = √(2.142/50) = 0.3

μ = M ± Z(sM)

μ = 6.34 ± 1.96*0.3

μ = 6.34 ± 0.5932

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