To be considered abnormal height a 30 year old must be 1.2 feet below average or 1.2 feet above average. If the average height is 5.1 feet, at what heights (in interval notation) would a 30 year old be considered abnormal? O [0,3.7) or (6.5,00) 0 (3.9,6.3] 0 (0,3.9] or [6.3,00) 0 (3.9,6.3)