試題詳解

90. Please choose the correct description for confidence level.
(A) Confidence level is the probability that the sample mean lies within a certain interval.
(B) Confidence level is the probability that the true mean lies within a certain interval.
(C) Confidence level is the range of values within which the population mean is expected to lie with a certain probability.
(D) Confidence level is the range of values within which the true value is expected to lie with a certain probability,
(E) None of the above.