Key Concepts
Rule for Change: A category changes articles only if a majority of all subscribers wants more or fewer articles in that category.
Question: Did the company REDUCE one category AND INCREASE another?
Requires: Majority says "Fewer" for A AND Majority says "More" for B.
Categories: World News (W), News from Country C (C), General Interest (G).
1. Evaluation of Statement (1)
Statement (1): Most subscribers in Country C conveyed that Z carried too many news articles that were irrelevant to them.
"Most subscribers in Country C" is not a majority of all subscribers.
This statement gives an opinion of a subset, which is insufficient to trigger the company's rule for change in any of the three categories (W, C, or G).
Conclusion for (1): NOT Sufficient.
2. Evaluation of Statement (2)
Statement (2): Most subscribers conveyed that Z carried too many articles on entertainment and science.
"Most subscribers" = Majority of all subscribers.
Entertainment and Science fall under the General Interest (G) category.
⟹ A majority wants fewer General Interest (G) articles. ⟹ REDUCTION in G. (Meets the reduction requirement.)
Missing Information: The statement gives no information on whether a majority wants more articles in the other two categories (W or C).
Conclusion for (2): NOT Sufficient. (We only know about the reduction, not the necessary increase.)
3. Evaluation of Statements (1) and (2) Together
From (2): ⟹ REDUCTION in G.
From (1): We only know the opinion of a subset (subscribers in Country C) regarding W. This is still not a majority of all subscribers.
We cannot confirm the necessary INCREASE in W or C. The company might reduce G and make no other changes, leading to a "NO" answer to the main question. Or, the same majority might also want more W, leading to a "YES" answer.
Conclusion for (1) and (2) TOGETHER: NOT Sufficient.