申論題

Problem 12. (2.5 %) Let Xi, 1 ≤ i ≤ 4 be independent Bernoulli random variable each with mean p = 0.1. Let X = That is, X is a Binomial random variable with parameters n = 4 and p = 0.1. Then, (i) E[X₁|X=2]=0.1
(ii) E[X1| X=2]=0.5
(iii) EXi|X=2]=0.25