A Black Belt practitioner states in a project report that "we are 95% confident that the average age of consumers of Product A are between 34 and 38 years". What does a confidence interval denote?

Question

Quizplus · Accepted Answer

A confidence interval denotes that they are 95% confident about the average age of the population.
Key Takeaway: In the above example, the practitioner is 95% confident that the average age of the population consumers of Product A are between 34 and 38 years. Since the average age is calculated based on a sample and not the population, a confidence level is considered an inferential tool. In other words, an inference or an educated guess is made about the population based on the characteristics of the sample.

A Black Belt Practitioner States in a Project Report That