Suppose a survey was conducted to find out what proportion of Americans intend to vote in the next Presidential election.For which of the following confidence intervals would it be fair to conclude, with high confidence, that a majority of Americans will vote in the next Presidential election?
A)52% plus or minus 3%
B)52% plus or minus 2%
C)52% plus or minus 1%
D)All of the above are "too close to call."

Question

Quizplus · Accepted Answer

The confidence interval of 52% plus or minus 1% means the lowest possible value is 51%, which still indicates a majority. Options A and B include values below 50%, making it uncertain if a majority will vote.

Suppose a Survey Was Conducted to Find Out What Proportion