Logical Reasoning

PT4 · S1 · Q23 When 100 people who have not

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When 100 people who have not used cocaine are tested for cocaine use, on average only 5 will test positive.

Your task

Describe the reasoning error the argument actually commits.

Common trap

Answers that name a real logical flaw the argument doesn't actually make.

Winning move

Articulate the gap in the reasoning yourself, then match it to the choice that describes that gap.

23.

A reasoning error in the argument is that the argument

  1. Attempts to infer a value

    Trap

    6% picked this

  2. Attributes to every member of

    Trap

    19% picked this

  3. Correct

    Fails to take into account

    Why this is right

    Answer C is correct.

    Skill tested: Flaw · how this choice captures the argument's function is the move to repeat next time.

    65% picked this

  4. Ignores the fact that some

    Trap

    10% picked this

  5. Advocates testing people for cocaine

    Trap

    0% picked this

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