Which of these statements is NOT a property of the confidence interval estimate of the population mean?
A) Its width narrows when the sample size increases.
B) Its width narrows when the value of the sample mean increases.
C) Its width widens when the confidence level increases.

Question

Quizplus · Accepted Answer

The width of the confidence interval estimate of the population mean widens when the sample standard deviation decreases or when the confidence level increases. The value of the sample mean does not affect its width as it is already taken into account while calculating the estimate.

Which of These Statements Is NOT a Property of the Confidence