Math Problem, Statistics
margin of error / confidence intervals
Candidates for election are often compared by the television commentators as winning or losing a recent poll or survey by a “plus or minus margin of error.”
Let’s say that Candidate Q is announced as ahead in the race by 49% with a plus or minus margin of error of 2 percentage points. The other candidate, Candidate Z, was shown to have 47% of the survey results with the same margin for error.
In another survey taken the same day in a different location, Candidate Z is shown as leading by 49% over Candidate Q, who has polled only 46% with a 3 percentage point margin of error.
Based on what you know about confidence intervals, which candidate do you believe is ahead in the race based on these results? Explain.
Last Updated on February 11, 2019 by Essay Pro