A tire company claims that its top selling brand averages at least 50,000 miles before it needs to be replaced. Past studies have shown the standard deviation is 8,000 miles. A survey of 28 owners of the tire design is conducted and the mean lifespan is 46,500 with a standard deviation of 9,800 miles. Using a 95% level of confidence, are the sample findings consistent with the company’s claim? 2. What is the p-value?

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