Statistical Inference

Question

In statistical inference, which of the following is NOT considered a random variable?

I. 𝑥̅1-𝑥̅2

II. μ1–μ2

III. 𝑥

IV. 𝑥̅

V. 𝜇

a. II, III

b. I, II, V

c. II, V

d. I, IV, V

Answer 1

c. as the population means are not random variables.