The width of a confidence interval for μ is not affected by:
A)the sample size.
B)the confidence level.
C)the standard deviation.
D)the sample mean.

Question

Quizplus · Accepted Answer

The width of a confidence interval for a population mean (μ) is affected by the sample size, the confidence level, and the standard deviation of the population or sample. However, it is not directly affected by the value of the sample mean itself. The sample mean determines the center of the confidence interval, not its width.

The Width of a Confidence Interval for μ Is Not