TABLE 1 Mothers Against Drunk Driving (MADD) is a very visible group whose main focus is to educate the public about the harm caused by drunk drivers. A study was recently done that emphasized the problem we all face with drinking and driving. Four hundred accidents that occurred on a Saturday night were analyzed. Two items noted were the number of vehicles involved and whether alcohol played a role in the accident. The numbers are shown below: Number of Vehicles Involved Did alcohol play a role? 1 2 3 Totals Yes 50 100 20 170 No 25 175 30 230 Totals 75 275 50 400 Referring to TABLE 1, what proportion of accidents did not involve alcohol and involved three vehicles? o 75/400 or 18.75% o 30/400 or 7.5% o 50/400 or 12.5% o 25/400 or 6.25%