Question

American Airlines and Air France both schedule nonstop flights from Paris to Philadelphia. Suppose you are choosing which airline to fly based on the one with more consistent flight times for the route. For each airline, the following table shows the flight times, in hours, of randomly selected flights for the route. These data can be found in the Excel file Air France.xlsx.
a. Using α = 0.10, determine if there is a difference in the variability of the flight times for these two airlines for this route.
b. Verify your results using PHStat.
c. Interpret the p value obtained from the software.


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  • CreatedJuly 28, 2015
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