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Random Variablesmedium
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Let XXX be a discrete random variable such that P(X=k)=c⋅kP(X=k) = c \cdot kP(X=k)=c⋅k for k∈{1,2,3,4}k \in \{1, 2, 3, 4\}k∈{1,2,3,4}. Find the value of ccc.