# Question: The probability is 1 in 4 000 000 that a single auto

The probability is 1 in 4,000,000 that a single auto trip in the United States will result in a fatality. Over a lifetime, an average U.S. driver takes 50,000 trips.

(a) What is the probability of a fatal accident over a lifetime? Explain your reasoning carefully.

(b) Why might the assumption of independence be violated?

(c) Why might a driver be tempted not to use a seat belt "just on this trip"?

(a) What is the probability of a fatal accident over a lifetime? Explain your reasoning carefully.

(b) Why might the assumption of independence be violated?

(c) Why might a driver be tempted not to use a seat belt "just on this trip"?

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