Critical Thinking

Course
Critical Thinking
Test
Week 5 Quiz
Started
2/8/14 4:00 PM
Submitted
2/8/14 4:54 PM
Status
Completed
Attempt Score
100 out of 100 points
Time Elapsed
53 minutes out of 2 hours.
Instructions
This quiz consist of 20 multiple choice questions and covers the material in the first half of Chapter 9. Be sure you are in Chapter 9 when you take the quiz.

Question 1
5 out of 5 points

To form a valid syllogism, which premise is missing in the following argument?
[missing premise]
Sam is a politician.
Therefore, Sam is a dishonest person.
Answer

Selected Answer: All politicians are dishonest persons.
Correct Answer: All politicians are dishonest persons.

Question 2
5 out of 5 points

The syllogism itself, not the premises, can be _____.
Answer

Selected Answer: valid.
Correct Answer: valid.

Question 3
5 out of 5 points

Which one of the following syllogisms is invalid?
Answer

Selected Answer: Some X are Y.
Some Z are X.
Therefore, some Z are Y.
Correct Answer: Some X are Y.
Some Z are X.
Therefore, some Z are Y.

Question 4
5 out of 5 points

Premises in syllogisms can be ________________.
Answer

Selected Answer: a and b
Correct Answer: a and b

Question 5
5 out of 5 points

Which one of the following hypothetical syllogisms is invalid?
Answer

Selected Answer: If P, then Q.
Not P.
Therefore, not Q.
Correct Answer: If P, then Q.
Not P.
Therefore, not Q.

Question 6
5 out of 5 points

Which rule is being violated in the following syllogism?
Only man (not the plants or animals) is that which has been called by God to avoid sin and reap the rewards of heaven.
Martha is not a man.
Therefore, Martha is not that which has been called by God to avoid sin and reap the rewards of heaven.
Answer

Selected Answer: