# Probability, fundamental rules

The probability is 1 in 4,000,000 that a single auto trip in the United States will result in fatality. Over a lifetime, an average U.S. driver takes 50,000 trips. (a) what is the probability of a fatat accident over a lifetime? Explain your reasoning. Hint: Assume independent events. Why might the assumption of independence be violated? (b) why might a driver be tempted not to use a seat belt "just on this trip" ?

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#### Solution Summary

This solution shows an application of the fundamental rules of probability

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