試題詳解

  21. A 95% confidence interval estinate can be interpreted to mean that
(A) Ifall possible samples of size N are taken and confidence interval estimates are developed, 95% of thems would include tibe true populat tion tean somewhere within their interval.
(B) We have 95% confidence that we have selected a sample whose interval does include the he population mean.
(C) Both above.
(D) None of the above.