A taxi company is trying to decide whether to purchase brand A or brand B tires for its fleet of taxis. To estimate the difference in the two brands, an experiment is conducted using 14 of each brand....

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Extracted text: A taxi company is trying to decide whether to purchase brand A or brand B tires for its fleet of taxis. To estimate the difference in the two brands, an experiment is conducted using 14 of each brand. The tires are run until they wear out. The results are given in the table below. Compute a 95% confidence interval for uA-He assuming the populations to be approximately normally distributed. You may not assume that the variances are equal. Brand A X = 35,000 kilometers s, = 5100 kilometers Brand B S, = 6500 kilometers X, = 38,800 kilometers Click here to view page 1 of the table of critical values of the t-distribution. Click here to view page 2 of the table of critical values of the t-distribution. The confidence interval is - 8357