4. 11.4 An industrial engineer collected data about the time required by various teams to assemble a 5-ton residential air-conditioning unit. Each team was evaluated five times. Team A had times of 1.5, 1.4, 1.2, 1.4, and 1.2 hours. Team B had times of 1.5, 1.3, 1.1, 1.1, and 1.3 hours. Team C had times of 1.5, 1.4, 1.4, 1.5, and 1.3 hours. If range is used as the sole criterion for determining precision, which team’s results were the most precise and what was the range of their results?