Does driving an ABS-equipped car change the behavior of drivers? To help answer this question, the following experiment was undertaken. A  random sample of 200 drivers who currently operate cars...

Does driving an ABS-equipped car change the behavior of drivers? To help answer this question, the following experiment was undertaken. A  random sample of 200 drivers who currently operate cars without ABS were selected. Each person was given an identical car to drive for 1 year. Half the sample were given cars that had ABS, and the other half were given cars with standardequipment brakes. Computers on the cars recorded the average speed (in miles per hour) during the year. Can we infer that operating an ABS-equipped car changes the behavior of the driver?