Ellen Singer asserted to one of her colleagues at Triangle Realty that homes in southern Durham County sold for about $15,000 less than similar homes in Chapel Hill. To test this assertion, her colleague randomly chose 10 recent sales in Chapel Hill and matched them with 10 recent sales in southern Durham County in terms of style, size, age, number of rooms, and size of lot. At α = 0.05, do the following data (selling prices in thousands of $) support Ellen’s claim? Chapel Hill 97.3 108.4 135.7 142.3 151.8 158.5 177.4 183.9 195.2 207.6 Durham County 81.5 92.0 115.8 137.8 150.9 149.2 168.2 173.9 175.9 194.4
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