📊 GMAT Exam Prep

A survey asked 1,000 city residents if they support a new public library. 60% said yes, 30% said no, and 10% were undecided. The survey has a margin of error of ±3 percentage points. Which of the following statements is a valid conclusion?

A Between 57% and 63% of residents definitely support the new library.
B More residents support the library than oppose it.
C It is possible that less than 50% of residents support the new library.
D The actual percentage of residents who support the library is exactly 60%.

✓ Correct Answer: Option B

The support range is 57-63% and opposition range is 27-33%. Even at the lowest end of support (57%) and highest end of opposition (33%), support is still definitively higher than opposition (57% > 33%). Thus, more residents support than oppose.

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