If your population is normally distributed which of the foll

If your population is normally distributed, which of the following statements regarding confidence intervals of population means is always false? A. When is known, we use the critical value, z. B. When n >30, we use the critical value, z. C. When n < 30, we use the critical value, t. D. None of A-C are always false.

Solution

D. None of A-C are always false.