The given dataset (Airport.xlsx) provides the responses from a random sample of 50 travelers who filled in a survey on the quality of the new
The given dataset (Airport.xlsx) provides the responses from a random sample of 50 travelers who filled in a survey on the quality of the new Kertajaya airport in Yogyakarta. The maximum possible rating is 10 points. (a) Provide a point estimate of the population average of quality ratings. (b) At 90% of confidence, what is the margin of error? (c) What is the 90% confidence interval estimates of the average ratings?
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