CNN reported the results of a survey of 902 adult Americans taken to assess whether Americans think there should be stronger gun control laws. The margin of error was reported to be 3%. Which choice best describes how to interpret the 3% margin of error?
A) The sample and population percentages differ by less than 3%.
B) The sample and population percentages differ by more than 3%.
C) There is a 95% chance that the sample and population percentages differ by more than 3%
D) There is a 95% chance that the sample and population percentages differ by less than 3%.

Question

Quizplus · Accepted Answer

The 3% margin of error means there is a 95% confidence level that the true population parameter (percentage in this context) will fall within 3% of the sample statistic.

CNN Reported the Results of a Survey of 902 Adult