PHI 103 Week 2 Quiz 2 Questions and Answers

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1. Question : Identify the form of the following argument. If there is a universal standard for ethics, then there is an ultimate foundation for morality. If there is an ultimate foundation for mo... rality, then humans can know the truth. Therefore, if there is a universal standard for ethics, then humans can know the truth. Student Answer: modus ponens disjunctive syllogism modus tollens not a valid form hypothetical syllogism Instructor Explanation: The answer can be found in Section 4.5, “Some Famous Deductive Argument Forms,” of With Good Reason: A Guide to Critical Thinking. Points Received: 1 of 1 Comments: Question 2. Question : Select the proper form of the following statement, where B is “I will buy a new computer” and C is “my computer crashes.” “I will buy a new computer only if my current computer crashes.” Student Answer: If C then B If B then C B and C B or C none of these Instructor Explanation: The answer can be found in Section 4.2, “Logical Operators,” of With Good Reason: A Guide to Critical Thinking. Points Received: 0 of 1 Comments: Question 3. Question : A categorical statement is one that _____________. Student Answer: is a statement of propositional logic makes a statement about two categories. is always true is part of a valid argument Instructor Explanation: The answer can be found in Section 3.4, “Categorical Logic: Introducing Categorical Syllogisms,” of With Good Reason: A Guide to Critical Thinking. Points Received: 0 of 1 Comments: Question 4. Question : What is the contrapositive of the statement “All sunsets are beautiful things”? Student Answer: All non-beautiful things are non-sunsets. none of these All non-sunsets are not non-beautiful No beautiful things are sunsets. All beautiful things are non-sunsets. Instructor Explanation: The answer can be found in Section 3.5, “Categorical Logic: Venn Diagrams as Pictures of Meaning,” of With Good Reason: A Guide to Critical Thinking. Points Received: 1 of 1 Comments: Question 5. Question : A sorites is __________. Student Answer: an argument with two premises and a conclusion an argument that is valid and sound an argument that strings together several subarguments an argument that has an unstated premise or conclusion an argument that is invalid and unsound Instructor Explanation: The answer can be found in Section 3.7, “Categorical Logic: Types of Categorical Arguments,” of With Good Reason: A Guide to Critical Thinking. Points Received: 1 of 1 Comments: Question 6. Question : “All men are mortal. Socrates is a man. Therefore Socrates is mortal” is what type of argument? Student Answer: inductive deductive invalid argument from definition Instructor Explanation: The answer can be found in Section 3.3, “Types of Deductive Arguments,” of With Good Reason: A Guide to Critical Thinking. Points Received: 1 of 1 Comments: Question 7. Question : In logic, which of the following is NOT true of all deductive arguments? Student Answer: they reason from [Show More]

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