Argument Quiz — Jon Young

For each of the following, indicate the premise that
will make the argument valid.  Do not worry too much at this point about
the plausibility of the premise or the conclusion, just identify the premise
that, when combined with the given premise, will make the argument valid. 
Remember an argument is valid if it is impossible for the premises to be true
and the conclusion false at the same time.  (Or, if the premises are true,
the conclusion must be true.)
Sample:
A hurricane hit the
coast.
The resort owners on
the coast have lost much money.
Which of the
following makes this a valid argument?
  1. The resort owners are hurt
    financially by hurricanes.
  2. The hurricane destroyed many
    buildings.
  3. Anytime the resort owners
    lose a great deal of money, it’s because there was a hurricane.
  4. Every time a hurricane hits
    the coast, the resort owners lose much money.
  5. None of the above.
Answer
4 is correct, because if taken with the premise, “A hurricane hit the
coast,” and if both premises are true, then it is impossible for it to
false that the resort owners on the coast have lost much money.
Check only one answer.

1. Barbara earned
a 3.5 GPA in her first semester.  Barbara is a good student.Which of the
following makes this argument valid?  (Click in the box.)
  1. No good student
    earns less than a 3.0 GPA.
  2. Good students earn high
    GPAs.
  3. All students who earn GPAs
    of 3.5 in the first semester are good students.
  4. Usually good students earn
    earn 3.5 GPA or better.
  5. None of the above.
2. Young’s
daughters went shopping on Saturday.  Therefore, Young has no money now.
  1. If Young has no
    money, then his daughters have been shopping.
  2. If Young’s daughters have
    been shopping, then he has no money now.
  3. Whenever Young’s daughters
    go shopping, they spend a lot of money.
  4. Often when Young has no
    money, it’s because his daughters have been shopping.
  5. None of the above.
3. Andrew made the
U.S. Olympic team.  He must be a good athlete.
  1. All good
    athletes in the U.S. are on the U.S. Olympic Team
  2. Anyone who makes the U.S.
    Olympic team must be a good athlete.
  3. Nearly all good athletes
    make the U.S. Olympic team.
  4. Very few people who make
    the U.S. Olympic Team are poor athletes.
  5. None of the above.
4. Premise: 
Max barks.  Conclusion:  Therefore, Max is a dog.
  1. All dogs bark.
  2. Anything that barks is a
    dog.
  3. If something is a dog, then
    it will bark.
  4. Most dogs bark
  5. None of the above.
5.  Matthew
Sampson is an ultra -liberal in his political views.   He doen’t
have a chance of being elected governor of this state.
  1. No governor
    elected in this state has ever been so liberal.
  2. The people in this state
    are very liberal.
  3. Most people elected
    governor are not ultra liberals.
  4. No person with
    ultra-liberal views has a chance of being elected governor of this
    state.
  5. None of the above.
6.  Fido is
barking.  Someone must be in the front yard.
  1. Fido always
    barks when someone is in the front yard.
  2. Fido is a very good watch
    dog.
  3. The only time Fido barks is
    when someone is in the front yard.
  4. Fido often barks when
    someone is in the front yard.
  5. None of the above.
7.  
Premises:  Gregory is not in class.  Conclusion:  
Therefore it is Thursday.
  1. Gregory always
    misses class on Thursday.
  2. If it’s Thursday, Gregory
    is not in class.
  3. If Gregory is not in class,
    then it is Thursday.
  4. Gregory has to work at his
    job all day on Thursday.
  5. None of the above.
8. Melinda
graduated from Julliard School of Music.  She must be a great pianist.
  1. All great
    pianists studied at Julliard School of Music.
  2. Julliard School of Music is
    one of the best in the country.
  3. Few graduates of Jullliard
    School of Music are poor pianists.
  4. Any graduate of Julliard
    School of Music is a great pianist.
  5. None of the above.
9. Saundra is
divorced.  Therefore Saundra has been married at least one time.
  1. No divorced
    person has ever been married.
  2. Anyone who is divorced must
    have been married at least once.
  3. The divorce rate has
    increased over the past several years.
  4. Some married people get
    divorces.
  5. None of the above.
10. Eddie and
Annette had no food left over from their party.  Their party must have
been great.
  1. All great
    parties have no leftovers.
  2. If the food at a party is
    good, then the party will be great.
  3. If a party has no
    leftovers, then it must have been great.
  4. Every great party has great
    food.
  5. None of the above.