Which is true about a 98% confidence interval for a population proportion based on a given
Sample?
I. We are 98% confident that other sample proportions will be in our interval.
II. There is a 98% chance that our interval contains the population proportion.
III. The interval is wider than a 95% confidence interval would be.
A) III only
B) I and II
C) I only
D) II only
E) none of these

Question

Quizplus · Accepted Answer

A 98% confidence interval is wider than a 95% confidence interval because a higher confidence level requires a broader range to ensure the population parameter is captured. Statements I and II are misconceptions about confidence intervals.

Which Is True About a 98% Confidence Interval for a Population