Question: Since 1984, all automobiles have been manufactured with a middle tail-light. You have been hired to answer the question, Is the middle tail-light effective in reducing the number of rear-end collisions? You have available to you any information you could possibly want about all rear-end collisions involving cars built before 1984. How would you conduct an experiment to answer the question? In your answer, include things like
(a) the precise meaning of the unknown parameter you are testing;
(b) H0 and H1;
(c) a detailed explanation of what sample data you would collect to draw a conclusion; and
(d) any assumptions you would make, particularly about the characteristics of cars built before 1984 versus those built since 1984.