3. Ellen Singer asserted to one of her colleagues at Triangle Realty that homes in southern Durham County sold for about $15000 less than similar home in Chapel Hill. To test this assertion, her colleague randomly chosen sales 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 [105 signicance level, do the following data (selling prices in thousands of '5) support Ellen's claim? 158.5 17?.4 149.2 168.2