Question

When the light turns yellow, should you stop or go through the light? A research article defined the “indecision zone” as the period when a vehicle is between 2.5 and 5.5 seconds away from an intersection. At the intersection of Route 7 and North Shrewsbury in Clarendon, Vermont, 154 vehicles were observed to encounter a yellow light while within the indecision zone and 21 ran the red light. At the intersection of Route 62 and Paine turnpike in Berlin, Vermont, 183 vehicles entered the intersection in the indecision zone and 20 rand the red light. Can you conclude that the proportion of red light runners differs between the two intersections?

Answer 1