Question

In: Psychology

Whenever an argument is in the pattern of modus ponens or modus tollens, then the argument...

Whenever an argument is in the pattern of modus ponens or modus tollens, then the argument is valid. True False

A sound deductive argument is the strongest possible reason you can give for a particular claim. True False

To be a sound deductive argument, the argument must be… inductively strong and have true premises. valid and inductively strong. valid and be deductively strong. valid and have all true premises.

The following represents the valid argument pattern called “modus ponens.” (1) If it is snowing, then the roads are slippery. (2) The roads are not slippery. ______________________ ? (3) It is not snowing (from 1 and 2). True False

The following argument is valid. (1) Either George or Jerry or Jimmy killed the governor. (2) George confessed to killing the governor. ______________________ ? (3) Jimmy did not kill the governor (from 1 and 2) True False

A counterexample to an argument is… a hypothetical situation that shows that it is possible that one of the premises to be false. a hypothetical situation that shows that it is possible that the argument is false. a hypothetical situation that shows that it is possible for the conclusion to be true and the premises false. a hypothetical situation that shows that it is possible for the conclusion to be false even if all the the premises are true.

All arguments that are valid are sound. True False

What is a possible counterexample to the following argument? (1) If Larry is a doctor, then Larry wears a white coat. (2) Larry wears a white coat. ______________________ ? (3) Larry is a doctor. (from 1 and 2) It is possible that Larry is a doctor and a nurse. It is possible that all the premises are false. It is possible that Larry is not a doctor, but rather a butcher. It is possible that Larry wears a pink coat.

An argument is valid if and only if… all the premises are, in fact ,true. it is impossible for all the premises to be true and the conclusion false. it is possible for all the premises to be true and the conclusion false. the conclusion is, in fact, true and so are the premises.

The following argument in standard form is valid. (1) All professors are made of cheese. (2) Dingo the dog is a professor. ______________________ ? (3) Dingo the dog is made of cheese. (from 1 and 2) True False

Expert Solution

Q. A sound deductive argument is the strongest possible reason you can give for a particular claim.

Ans. True.

(A sound deductive argument is one where the premises are true and the conclusion following from it is also true).

Q. To be a sound deductive argument, the argument must be… inductively strong and have true premises.

Ans. valid and have all true premises.

(An argument is sound only if both the premises and the following conclusions are true).

Q. The following represents the valid argument pattern called “modus ponens. (1) If it is snowing, then the roads are slippery. (2) The roads are not slippery. ______________________ ? (3) It is not snowing (from 1 and 2)

Ans. False.

(An argument to be valid when the premises are true and the concussion has to be true but it does not mean conclusion will always be is true as well. A valid argument can be modus ponens it is a propositional and conditional statement).

Q. The following argument is valid. (1) Either George or Jerry or Jimmy killed the governor. (2) George confessed to killing the governor. ______________________ ? (3) Jimmy did not kill the governor (from 1 and 2).

Ans. false

(It is not valid because the premises do not provide conclusive reasons for the conclusion to be true).

Q.---

Q. All arguments that are valid are sound.

Ans. False

(The valid arguments that has one or more false premises are unsound).

Q. What is a possible counterexample to the following argument? (1) If Larry is a doctor, then Larry wears a white coat. (2) Larry wears a white coat. ______________________ ? (3) Larry is a doctor. (From 1 an 2)

Ans. It is possible that Larry is not a doctor, but rather a butcher.

Q. An argument is valid if and only if… all the premises are,

Ans. it is impossible for all the premises to be true and the conclusion false.

Q. The following argument in standard form is valid. (1) All professors are made of cheese. (2) Dingo the dog is a professor. ______________________ ? (3) Dingo the dog is made of cheese. (from 1 and 2)

Ans. True.

(It is valid because the truth of the premises is giving the truth of the conclusion.)

Hayet Jeridi answered 4 months ago

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