The probability is 1 in 4,000,000 that a single auto trip in the U.S. will result in a fatality over a lifetime. Explain your reasoning. Hint, assume independent events.
a. Why might the assumption of independents be violated?
b. Why might a driver be tempted not to use a seatbelt "just on the trip"?
Since probability of the fatality over lifetime = 1/400000
a. Since all the ...
This solution determines the fatality over a lifetime based on the probability of 1 in 4 million.