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The manufacturer of a particular brand of tires claims they average at least 78,000 km before needing to be replaced. From past studies of this

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The manufacturer of a particular brand of tires claims they average at least 78,000 km before needing to be replaced. From past studies of this tire, it is known that the population standard deviation is 13,000 km. A survey bf tire owners was conducted to determine if the mileage of the tires is lower than 78,000 km. From the 49 tires sampled, the mean lifespan was 75,000 km. Testing at a = 8%, can we prove that the data is inconsistent with the manufacturers claim? A. We should use a test. B. What are the correct hypotheses? fieID Based on the hypotheses, find the following (round correct to at least 2 decimal places): C. Test Statistic = D D. Critical Value = D (note the direction of H1) E. The correct decision is to . F. The correct conclusion would be: 0 There is not enough evidence to conclude that the tires last less than the kilometres claimed 0 There is enough evidence to conclude that the tires last less than the kilometres claimed 0 There is not enough evidence to conclude that the tires do not last less than the kilometres claimed 0 There is enough evidence to conclude that the tires do not last less than the

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