03c Study ANSWER KEY

03c Study ANSWER KEY - ANSWER KEY Question 1 : Is it...

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ANSWER KEY Question 1 : Is it possible to have arguments of the following kinds? Write YES or NO in each box, then, for each NO, explain why. For Each YES, provide an example. Pay particular attention to the blocks that are double-lined. True conclusion Two true premises True conclusion Two false premises False conclusion Two true premises False conclusion Two false premises Valid & sound arguments Yes. Cows are mammals. Mammals are animals. So cows are animals. No. If the premises are false, the argument is not sound. No. If the premises are true and the argument is valid, the conclusion must also be true. No. If the premises are false, the argument is not sound. Valid & unsound arguments No. If the premises are true and the argument is valid, the argument is sound. Yes. Cows are insects. Insects are mammals. So cows are mammals. No. If the premises are true and the argument is valid, the conclusion must also be true. Yes. Cows are insects. Insects are viruses. So cows are viruses. Invalid & sound arguments No. By definition a sound argument has to be valid. No. By definition a sound argument has to be valid. No.
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This note was uploaded on 04/16/2008 for the course COMS 2 taught by Professor Williams during the Fall '07 term at CSU Sacramento.

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03c Study ANSWER KEY - ANSWER KEY Question 1 : Is it...

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