alleryExpected value E(X) of discrete random variable:
AVariance
BΣ x_i P(x_i)
CBoth A and B are equivalent
DMean
Answer & Solution
Correct answer: C. Both A and B are equivalent
E(X) = Σ x_i P(x_i) = mean of distribution.
**Linearity:** E(aX + b) = aE(X) + b.
**For continuous:** ∫ x f(x) dx.
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