Problem-Solving and Data AnalysisMediumValue plausible under two polls
Problem-Solving and Data Analysis practice question
Two polls of the same population asked the same question. Poll A's result gives a plausible range of 44% to 50% for the population percentage; Poll B's gives 47% to 53%. Which of the following percentages is plausible according to BOTH polls?
- A. 48%Correct
- B. 45%
- C. 52%
- D. 44%
Answer: A. 48%
A value must lie in both ranges — that is, from 47% to 50%. Only 48% does.
Why the other answers are wrong
- B. 45%
- 45% is inside Poll A's range but below Poll B's 47%.
- C. 52%
- 52% is inside Poll B's range but above Poll A's 50%.
- D. 44%
- 44% is at the bottom of Poll A's range but outside Poll B's.
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