The width of a confidence interval will be:
A)Narrower for 98% confidence than for 90% confidence.
B)Wider for a sample size of 64 than for a sample size of 36.
C)Wider for a 99% confidence than for 95% confidence.
D)Narrower for sample size of 25 than for a sample size of 36.
E)None of the above.

Question

Quizplus · Accepted Answer

A higher confidence level (e.g., 99% vs. 95%) results in a wider confidence interval because it requires a larger margin of error to ensure that the interval captures the true parameter with greater certainty.

The Width of a Confidence Interval Will Be