Answer: Car Failures. In Exercises 1922, refer to the accompanying table, which
Chapter 5, Problem 22(choose chapter or problem)
Car Failures. In Exercises 1922, refer to the accompanying table, which describes results of roadworthiness tests of Ford Focus cars that are 3 years old (based on data from the Department of Transportation). The random variable x represents the number of cars that failed among six that were tested for roadworthiness. x P(x) 0 0.377 1 0.399 2 0.176 3 0.041 4 0.005 5 0 + 6 0 + Using Probabilities for Unusual Eventsa. Find the probability of getting exactly one car that fails among six cars tested.b. Find the probability of getting one or fewer cars that fail among six cars tested.c. Which probability is relevant for determining whether one is an unusually low number of cars that fail among six cars tested: the result from part (a)or part (b)?d. Is one an unusually low number of cars that fail among six cars tested? Why or why not?
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