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Random Variablesmedium
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A discrete random variable XXX follows a distribution where P(X=k)=k10P(X=k) = \frac{k}{10}P(X=k)=10k​ for k∈{1,2,3,4}k \in \{1, 2, 3, 4\}k∈{1,2,3,4}. What is the expected value E[X]E[X]E[X]?