You read in the newspaper that Proposition Q is favored by 57% of those polled. The results of the survey are said to be accurate within ±2 percentage points using a 95% level of confidence. From the information provided, it can be inferred that the actual population value is probably between _____.

Question

Quizplus · Accepted Answer

The margin of error is ±2 percentage points, which means the actual population value could be up to 2 percentage points higher or lower than the reported value of 57%. So, the range would be 55% (57%-2%) to 59% (57%+2%). Therefore, the correct answer is choice C.

You Read in the Newspaper That Proposition Q Is Favored