Suppose the Federal Aviation Administration would like to compare the on time performances of different airlines on domestic, nonstop flights. The following table shows three different airlines and the frequency of flights that arrived early, on time, and late for each:

a. Using α = 0.05, perform a chi-square test to determine if on time performance and airline are independent of one another.

b. What conclusions can be made based on your results?

c. Determine the p-value using Excel and interpret its meaning.

d. Verify your results using p-value.

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Stats Southwest United Airlines Early On time Late Delta 20 60 25 24 50 14 30