Mathematics · Probability

The probability mass function (p.m.f) of a random variable X is given by P(X = x) = 2xn(n + 1) for x = 1, 2, 3, ..., n, and 0 otherwise. Find the expected value E(X).

Verified Solution4 OptionsUpdated: October 2026👁️1 View

Correct answer

2n + 13

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