Example 4.4.2---Paired T^2-Test x={2600 2350, 2850 2350, 2800 2250, 2750 2200, 2400 2250, 2450 2300}; y={1450 1300, 1750 1450, 1700 1350, 1650 1300, 1350 1250, 1400 1300};