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Competitive Stats
Q29Section ST (Statistics (Q11–Q65))29 of 65

Second moment of a binomial

Let X∼Bin⁡(2,13)X \sim \operatorname{Bin}(2, \frac{1}{3}). Then 18E(X2)18 E(X^2) equals __________ (answer in integer).

Numerical answer: type the number (no options).

Type your answer and check it.