Consider a normally distributed population.The width of a confidence interval for the population mean will be
A)smaller for a 98% confidence than for 90% confidence.
B)larger for a sample size of 64 than for a sample size of 36.
C)larger for a 99% confidence than for 95% confidence.
D)smaller for sample size of 25 than for a sample size of 36.
E)larger for a standard deviation of 25 units than for a standard deviation of 50 units.

Question

Quizplus · Accepted Answer

The width of a confidence interval increases with the level of confidence. A 99% confidence interval is wider than a 95% confidence interval because it needs to encompass more of the data to be 99% confident about the estimate.

Consider a Normally Distributed Population