Source: Manhattan GMAT CR Guide 4th Ed
In a recent poll, 71% of respondents reported that they cast votes in the most recent national election. Voting records show, however, that only 60% of eligible voters actually voted in that election.
Which of the following pieces of evidence, if true, would provide the best explanation for the discrepancy?
A: The margin of error for the survey was plus or minus five percentage pints. => INCORRECT
B: Fifteen percent of the survey's respondents were living overseas at the time of election. => INCORRECT
C: Prior research has shown that people who actually do vote are also more likely to respond to polls than those who do not vote.
D: Some people who intended to vote are presented from doing so by last minute conflicts on election day or other complications.
E: Polls about voting behavior typically have margins of error within plus or minus three percentage points. => INCORRECT
OA: C
What about C and D?
In a recent poll, 71% of respondents reported that they cast votes in the most recent national election. Voting records show, however, that only 60% of eligible voters actually voted in that election.
Which of the following pieces of evidence, if true, would provide the best explanation for the discrepancy?
A: The margin of error for the survey was plus or minus five percentage pints. => INCORRECT
B: Fifteen percent of the survey's respondents were living overseas at the time of election. => INCORRECT
C: Prior research has shown that people who actually do vote are also more likely to respond to polls than those who do not vote.
D: Some people who intended to vote are presented from doing so by last minute conflicts on election day or other complications.
E: Polls about voting behavior typically have margins of error within plus or minus three percentage points. => INCORRECT
OA: C
What about C and D?
