Question: Let X be a discrete random variable with mean LL. The probability mass function of X is for x = 7 or 10/ 20 f(x)

Let X be a discrete random variable with mean LL. The probability mass function of X is for x = 7 or 10/ 20 f(x) = lo elsewhere Find E[(X - () 3]. (Hint: You must first find the mean.) 1/4 ) 1/8 1/2 Oo Jour O-1/4

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