Question: The PMF of the random variable Y satisfies py ( - 1 ) = 1 / 6 , py ( 2 ) - 2 /

The PMF of the random variable Y satisfies py (-1)=1/6, py(2)-2/6, py (5)=3/6,py (y)=0 and for all other values y. The expected value of Y is:

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