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Statement-Assumption - Expert Level: necessary assumptions EXPERT

Comprehensive self assessment worksheet covering 20 expert-level statement-assumption problems. Worksheet 28 of 30 emphasizes necessary assumptions. Master logical assumptions, statement analysis, assumption detection through detailed explanations. Difficulty: challenging problems and time-bound practice. Tailored for expert-level preparation.

📝 Worksheet 28 of 30 • 20 questions • ⏱️ Estimated time: 20 minutes • 🎯 Expert level

What you'll learn in this worksheet:
Your progress through Statement-Assumption
Worksheet 28 of 30 (93% complete)

Question 1

Statement: Crime rates decreased after installing more street lights, proving that better lighting reduces crime. Which assumption is most problematic in this causal argument?
The assumption 'Correlation implies causation' is problematic because it establishes causation without ruling out alternative explanations or confounding variables.
assumption, causality, logic

Question 2

Argument: If you want to lose weight, you should exercise regularly. However, exercise alone isn't enough; you also need a healthy diet. Assumption: 'Exercise alone is sufficient for weight loss' Is this assumption necessary, sufficient, both, or neither for the argument's conclusion?
False: The argument explicitly contradicts this
assumption, necessary, sufficient, logic

Question 3

Argument: We should hire Maria as our lead developer because she has 10 years of experience in our industry. Consider the assumption: 'Maria wants the position' If we negate this assumption (assume the opposite), does it break the argument?
No — Even if she doesn't want it, we could still argue we should hire her (though she'd decline)

Negation test: If 'Maria does NOT want the position' then the argument 'still could hold'.
assumption, negation, test, validity

Question 4

Statement: Private companies provide better customer service than government organizations. Which of the following is an assumption made in the statement?
The statement assumes that private companies are profit-motivated, which is necessary for the argument to be valid.
assumption, identification, basic

Question 5

Statement: Students' test scores improved after the new teaching method was introduced, confirming its effectiveness. Which assumption is most problematic in this causal argument?
The assumption 'The teaching method caused the improvement' is problematic because it establishes causation without ruling out alternative explanations or confounding variables.
assumption, causality, logic

Question 6

Statement: Social media platforms should verify all user accounts to prevent fake news. Which of the following is an assumption made in the statement?
The statement assumes that platforms have responsibility for content, which is necessary for the argument to be valid.
assumption, identification, basic

Question 7

Statement: The city should ban private vehicles during weekdays and promote electric buses to reduce air pollution and improve public health. Which assumption is most fundamental to this argument?
While the statement makes multiple assumptions, 'Private vehicles are major pollution sources' is the most fundamental because without it, the entire premise of the solution becomes questionable.
assumption, multiple, complex

Question 8

Statement: Students' test scores improved after the new teaching method was introduced, confirming its effectiveness. Which assumption is most problematic in this causal argument?
The assumption 'The teaching method caused the improvement' is problematic because it establishes causation without ruling out alternative explanations or confounding variables.
assumption, causality, logic

Question 9

Argument: To be president of the United States, a person must be at least 35 years old, a natural-born citizen, and a resident for 14 years. Assumption: 'Meeting all three conditions is sufficient for presidency' Is this assumption necessary, sufficient, both, or neither for the argument's conclusion?
Not necessarily true: You also need to win the election - these are necessary but not sufficient
assumption, necessary, sufficient, logic

Question 10

Statement: Crime rates decreased after installing more street lights, proving that better lighting reduces crime. Which assumption is most problematic in this causal argument?
The assumption 'Correlation implies causation' is problematic because it establishes causation without ruling out alternative explanations or confounding variables.
assumption, causality, logic

Question 11

Argument: To get an A in this course, you must complete all assignments and score above 90% on the final exam. Assumption: 'Scoring above 90% guarantees an A' Is this assumption necessary, sufficient, both, or neither for the argument's conclusion?
Not necessarily true: You also need assignments - exam alone is insufficient
assumption, necessary, sufficient, logic

Question 12

Argument: We should hire Maria as our lead developer because she has 10 years of experience in our industry. Consider the assumption: 'No other candidate has more relevant experience' If we negate this assumption (assume the opposite), does it break the argument?
Yes — If others have more experience, she may not be the best choice

Negation test: If 'Other candidates have more relevant experience' then the argument 'fails'.
assumption, negation, test, validity

Question 13

Argument: To be president of the United States, a person must be at least 35 years old, a natural-born citizen, and a resident for 14 years. Assumption: 'Anyone over 35 can be president' Is this assumption necessary, sufficient, both, or neither for the argument's conclusion?
False: Ignores citizenship and residency requirements
assumption, necessary, sufficient, logic

Question 14

Argument: To get an A in this course, you must complete all assignments and score above 90% on the final exam. Assumption: 'Scoring above 90% on the final exam is necessary for an A' Is this assumption necessary, sufficient, both, or neither for the argument's conclusion?
Necessary: Also explicitly required by the statement
assumption, necessary, sufficient, logic

Question 15

Statement: The city should ban private vehicles during weekdays and promote electric buses to reduce air pollution and improve public health. Which assumption is most fundamental to this argument?
While the statement makes multiple assumptions, 'Private vehicles are major pollution sources' is the most fundamental because without it, the entire premise of the solution becomes questionable.
assumption, multiple, complex

Question 16

Statement: Nuclear energy is safer than coal power, therefore we should build more nuclear plants. What hidden premise must be true for this argument to be valid?
The argument implicitly assumes that safety is the primary criterion for energy policy decisions, which may not always be true.
assumption, premise, hidden

Question 17

Statement: This candidate has 20 years of experience, so they're the best choice for the position. What hidden premise must be true for this argument to be valid?
The argument implicitly assumes that experience duration directly correlates with job performance, which may not always be true.
assumption, premise, hidden

Question 18

Statement: Crime rates decreased after installing more street lights, proving that better lighting reduces crime. Which assumption is most problematic in this causal argument?
The assumption 'Correlation implies causation' is problematic because it establishes causation without ruling out alternative explanations or confounding variables.
assumption, causality, logic

Question 19

Statement: The stock market rose today, indicating economic recovery is underway. What hidden premise must be true for this argument to be valid?
The argument implicitly assumes that stock market performance reflects overall economic health, which may not always be true.
assumption, premise, hidden

Question 20

Statement: Students perform better when class sizes are reduced from 30 to 15 students. What is the primary assumption underlying this statement?
The statement implicitly assumes that teacher attention improves with fewer students, which is crucial for the conclusion to be valid.
assumption, implicit, analysis
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