Which of the following is the necessary condition for creating confidence intervals for the population mean?
A) Normality of the estimator
B) Normality of the population
C) Known population parameter
D) Known standard deviation of the estimator

Question

Quizplus · Accepted Answer

The normality of the estimator (sample mean) is necessary, especially for small sample sizes, to ensure the validity of confidence intervals. This is often achieved through the Central Limit Theorem for large samples.

Which of the Following Is the Necessary Condition for Creating