Problem-Solving and Data AnalysisMediumPlausible population value from a poll
Problem-Solving and Data Analysis practice question
In a random sample of 200 voters, 56% said they favour a new library. The margin of error for the estimate is 4 percentage points. Which of the following is a plausible value for the percent of all voters who favour the new library?
- A. 58%Correct
- B. 50%
- C. 62%
- D. 45%
Answer: A. 58%
Plausible values run from 52% to 60%; 58% is inside that interval.
Why the other answers are wrong
- B. 50%
- 50% is below 52%.
- C. 62%
- 62% is above 60%.
- D. 45%
- 45% is far below the interval.
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