The Link Between the Variance Of $\bar { Y }$ And the Probability That

Multiple Choice

The link between the variance of $\bar { Y }$ and the probability that $\bar { Y }$ is within $\pm \delta \text { of } \mu _ { Y }$ is provided by

A) Slutsky's theorem.
B) the Central Limit Theorem.
C) the Law of Large Numbers.
D) Chebychev's inequality.