Problem: you work for a manufacturer of tires (average life of your

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Problem: you work for a manufacturer of tires (average life of your tires is 60.000 km with a standard deviation of 8.000 km). A supplier offers you new material that he says will increase by 10% the mileage of the tires you produce. A) What are the hypotheses for the test you will do? B) Write a rejection rule for your test with a(alpha) = 0.05

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