Which is true about a 95% confidence interval based on a given sample?
I.The interval contains 95% of the population.
II.Results from 95% of all samples will lie in the interval.
III.The interval is narrower than a 98% confidence interval would be.
A)I only
B)II only
C)III only
D)II and III only

Question

Quizplus · Accepted Answer

III is true because a 95% confidence interval is narrower than a 98% confidence interval, as increasing the confidence level widens the interval to include more of the population.

Which Is True About a 95% Confidence Interval Based on a Given