Choose the one alternative that best completes the statement or answers the question.
-A confidence interval for a parameter is
A) An interval of numbers combined with the likelihood the interval contains the unknown parameter.
B) A point estimate plus a margin of error.
C) An interval of probabilities concerning a parameter.
D) A statement of believability of a statistical result.

Question

Quizplus · Accepted Answer

A confidence interval is an interval of numbers, usually derived from sample statistics, that is likely to contain the true parameter of a population with a certain level of confidence. This definition aligns with option A, as it combines an interval of numbers (the confidence interval itself) with the likelihood (confidence level) that this interval actually contains the unknown parameter.

Choose the One Alternative That Best Completes the Statement or Answers