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2. The experimental lab of a car company is testing the performance of two different types of cars with three blends of gasoline. Cars were

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2. The experimental lab of a car company is testing the performance of two different types of cars with three blends of gasoline. Cars were driven 1000 miles and the gas mileage was recorded in the following table: (10 marks total) Blend 1 Blend 2 Blend 3 Asian Cars 22.6 19.6 25.3 20.9 22.3 21.6 23.6 20.5 20.5 North 21.9 17.0 24.6 American 22.0 17.6 22.7 Cars 21.1 19.2 20.5 a. Clearly state the null and alternative hypotheses. (2 marks) b. Calculate the test statistic, using a= 0.05. (3 marks) c. State the conclusion(s). (2 marks) d. How do you know there exists an interaction term? Interpret the meaning of the interaction term in the context of this experiment

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