re three years old (based on data from the Department of Transportation). The rando badworthiness: ariable x represents the number of cars that failed among six that were tested for X P(x) 0 0.377 0.399 2 0.176 3 0.041 4 0.005 5 0+ 6 0+ s the probability of getting three or more cars that fail among six cars tested significa letermined by a cutoff value of 0.05