Suppose that for a large population, the margin of error of Poll A is 2%, and the margin of error of Poll B is 4%. Then,
A) The sample used in Poll A is much larger than the sample used in Poll B.
B) The sample used in Poll A is slightly larger than the sample used in Poll B.
C) The sample used in Poll B is much larger than the sample used in Poll A.
D) The sample used in Poll B is slightly larger than the sample used in Poll A.
E) The difference in sampling error is unrelated to the size of the samples.

Question

Quizplus · Accepted Answer

The margin of error is inversely related to the square root of the sample size, meaning a smaller margin of error (like 2% in Poll A) indicates a larger sample size compared to a larger margin of error (like 4% in Poll B).

Suppose That for a Large Population, the Margin of Error