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Soundness of an Argument

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Submitted By mzhillbilly2004
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State each argument’s conclusion. The following are the conclusions for the arguments in Wk 6 – Logic Handout 1:
 Therefore, the slaves were freed
 Therefore, the slaves were freed
 All seniors are ugly (F)
 All ugly people are insightful (T)
 All talented people are insightful (T)

For each argument, state the premises (i.e., reasons) that supposedly support each separate conclusion.

Premiss 1: If the North won the Civil War, then he slaves were freed
Premiss 2: The North won the Civil War

Premiss 1: If the South won the Civil War, then he slaves were freed
Premiss 2: The South won the Civil War

Premiss 1: All seniors are talented (F)
Premiss 2: All talented people are ugly (F)

Premiss 1: All ugly people are seniors (F)
Premiss 2: All seniors are insightful (F)

Premiss 1: All ugly people are insightful (T)
Premiss 2: All talented people are ugly (F)

Symbolize each argument (Remember: a universal statement is a statement that makes a claim about all members of its group. The key to translating All ugly people are seniors in the exercise above, for example, is to interpret the universal statement as the conditional statement If it is a ugly person, then it is a senior [for every member of its subject class: ugly people]).

 If people were free, then they were a slave
 If people were free, then they were a slave
 If it is an ugly person, then it is a senior.
 If it is an insightful person, then they are ugly.
 If it is an insightful person, then they are talented.

Are these deductive or inductive arguments?
These are deductive arguments as they attempt to follow the deductive logical form

Are the arguments valid? (Why or why not?) Hint: Refer to the Intellectual Standards of Validity in analysis and assessment.
The arguments are both valid and invalid because some of the arguments are true, which makes

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