Let x1nbspand x2nbspdenote a sequence of independent


Let X1 and X2 denote a sequence of independent samples of a random variable X with variance Var[X].

(a) What is E[X1 - X2], the expected difference between two outcomes?

(b) What is Var[X1 - X2], the variance of the difference between two outcomes?

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Basic Statistics: Let x1nbspand x2nbspdenote a sequence of independent
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