2. With the high cost of fuel, airlines are trying many things to save money. Continental is using smaller planes on its nonstop flights from Northern Europe to the Eastern United States. As a consequence, when there is a strong headwind, these flights use more fuel than usual. A greater proportion of these "nonstop" flights are, out of necessity, stopping for fuel. When Continental used a smaller plane, the flight had to stop for fuel on 43 out of 1100 flights. When Continental used a larger plane for this route, they stopped for fuel on 12 of the 1100 flights. Do larger planes make unscheduled stops less frequently? a. Is this a dependent or independent sample? b. What is the result of the appropriate hypothesis test, using the a = 0.05 level of significance?