The margin of error for a 95% confidence interval is 2.8. If we decrease the confidence level to 90%, the margin of error will be
A) biased.
B) 99%.
C) 2.8.
D) smaller than 2.8.
E) larger than 2.8.

Question

Quizplus · Accepted Answer

Decreasing the confidence level will result in a smaller margin of error. This is because a lower confidence level means we are less certain about the accuracy of our estimate, so we are willing to accept a larger margin of error. Therefore, the margin of error will be smaller than 2.8.

The Margin of Error for a 95% Confidence Interval Is