A random sample of California residents who had recently visited a car dealership were asked which type of vehicle they were most likely to purchase, with the results shown. Research question: At α = .10, is the choice of vehicle type independent of the buyer’s age?

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Buyer's Age Vehicle Type Under 30 50 and Over Row Total 30 < 50 5 15 10 30 Diesel Gasoline Hybrid Electric Col Total 45 25 15 30 90 75 25 25 15 45 15 15 100 60 240 80