# Question

Travelocity would like to estimate the current average domestic airfare. The following data show the airfares for 24 randomly selected tickets for travel within the United States. These data can also be found in the Excel file titled domestic airfares.xlsx.

a. Construct a 99% confidence interval with these data to estimate the average domestic airfare.

b. What is the margin of error for this sample?

c. Verify your results using Excel.

a. Construct a 99% confidence interval with these data to estimate the average domestic airfare.

b. What is the margin of error for this sample?

c. Verify your results using Excel.

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