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chapter 4 homework

# chapter 4 homework - PHL 311 Chapter 4 Homework 1(1 anyone...

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PHL 311: Chapter 4 Homework Austin DeBoer 1. (1) anyone who lives with a smoker has an above-average risk of heart disease. (2) Sarah doesn’t live with a smoker________________ Sarah doesn’t have an above- average risk of heart disease Invalid pattern: (1) All p1’s are p2’s (2) M is not a p1__ m is not a p2 Counterexample: (1) anyone who is a mother is female (2) Sarah is not a mother Sarah is not a female 2. (1) if federal government oversight is lax, then corporate crime will increase. (2) Corporate crime has increased______ the federal government oversight is lax Invalid pattern: (1) If A, then B (2) B_______ A Counter example: (2) If these cookies are good, then they are chocolate chip (3) These cookies are chocolate chip_______ These cookies are good 3. (1) If dinner guests are coming, then we need more food. (2) If we need more food, then we need to go to the store (3) Dinner guests aren’t coming_________________ we don’t need to go to the store Invalid pattern: (1) If G, then F (2) If F, then S (3) Not G________ Not S Counter example: (1) If the statue of liberty is in San Francisco, Then it is in California (2) If the Statue of Liberty is in California, then it is in the United States (3) The Statue of Liberty is not in san Francisco The Statue of Liberty is not in the United States

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PHL 311: Chapter 4 Homework Austin DeBoer 4. (1) no great singer has a weak voice (2) Kim is not a great singer Kim has a weak voice Invalid Pattern: (1) All P1’s are P2’s (2) M is not a P1 M is a P2 Counter Example: (1) All good teachers are sensitive to the needs of students (2) Joe is not a good teacher Jones is sensitive to the needs of the students 5. (1) If the American people feel overtaxes, then they will press for tax cuts (2) The American people don’t feel overtaxes___ The American People won’t press for tax cuts Invalid pattern: (1) If A, the T (2) Not A___ Not T Counter Example; (1) If the Martin Luther King Memorial in Hawaii, then it is in the United States (2) The Martin Luther King Memorial is not in Hawaii________ The martin Luther King memorial is not in the United States 6. (1) All doctors have studied medicine (2) Paul is not a doctor_______ Paul has not studied medicine Invalid pattern: (1) All D’s are (have studied) M’s (2) P is not an ( has not studied) M P is not a D Counter example: (1) All historians have a history degree (2) Susie does not have a history degree Susie is not a historian 7. (1) All good friends are compassionate people (3) All good friends are honest people All compassionate people are honest Invalid Pattern: (1) All P1’s are p2’s (2) All p1’s are p3’s all p2’s are p3’s Counterexample:
PHL 311: Chapter 4 Homework Austin DeBoer (1) All mothers are animals (2) All mothers are female all animals are female 8. (1) If nanotechnology is the business of the future, then it will attract investment

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chapter 4 homework - PHL 311 Chapter 4 Homework 1(1 anyone...

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