The 55-Mph Speed Limit Was Introduced in the U

question 4

Multiple Choice

The 55-mph speed limit was introduced in the U.S. in 1973. Shortly thereafter the number of auto accidents declined. We can conclude that:​

• A) ​the reduced speed limit caused the decline in auto accidents.
• B) the reduced speed limit may have caused the decline in the number of auto accidents.​
• C) the reduced speed limit and the number of auto accidents are causally related.​
• D) the reduced speed limit had nothing to do with the decline in auto accidents.​

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Definitions:

Standard Form

A structured format for presenting arguments or equations in a universally understood manner.

Proposition

A declarative sentence that can be either true or false but not both.

Hypothetical Syllogism

A logical argument form where two conditional statements lead to a conclusion, essentially connecting the antecedent of one to the consequent of the other.

Modus Ponens

A form of deductive reasoning that allows one to conclude a certain proposition if a conditional statement (if-then) is true and its antecedent is true.