Home Work Assignment 4
Phil 106 – Critical Thinking      Name________________________________
Fall 2007       Section_______________________________
Instructor: Ray Darr     Date_________________________________


Fill in the blank provided with either  “True” or “False”.


1. _____All valid arguments must have a true conclusion.


2. _____Conclusions can be either valid or invalid.


3. _____A valid argument can never have false premises.


4. _____There is always something wrong with the evidence provided in an invalid argument.


5._____No valid argument can have a false conclusion if the premises are true.


6._____A strong inductive argument guarantees the certainty of the conclusion.


7._____To ask a question about the validity of an argument is to ask about its content. (i.e. the evidence or premises)


8._____Validity has nothing to do with the truth or falsity of the evidence.


9. _____An argument is a set of propositions related in such a way that one of the propositions is claimed to follow from the others.


10.____It is a flaw in the argument’s structure or form that causes it to be invalid.


11.____In an inductive argument, the premises are intended to make the conclusion inevitable.


12.____An argument contains both premises and a conclusion.


13.____A proposition is a statement capable of being assessed as either true or false.


14.____A strong inductive argument is one in which the truth of the premises establishes a relatively high

             degree of probability that the conclusion is true.


15.____The two types of propositions in an argument are premises and conclusions.


16.____A syllogism is an inductive argument that has two premises and a conclusion.


17.____A hypothetical syllogism consists of a major premise in hypothetical form, a minor premise and an inferred conclusion.


18.____Minor premises describe the situation about which a decision must be made.


19.____In a hypothetical syllogism, the conclusion is derived by inductive inference.


20.____Affirming the antecedent is a valid form of argument.