The width of the confidence interval estimate of the population mean μ is a function of only two quantities: the population standard deviation σ and the sample size n.

Question

Quizplus · Accepted Answer

The width of the confidence interval for the population mean μ also depends on the confidence level chosen (e.g., 90%, 95%, 99%), which affects the value of the critical z or t statistic used in the calculation, in addition to the population standard deviation σ and the sample size n.

The Width of the Confidence Interval Estimate of the Population