Question: Please answer all the following items. Show your complete solution / explanation. Thank you! Compute the expected value of the discrete random variable. 13. Let

Please answer all the following items. Show your complete solution / explanation. Thank you!

Compute the expected value of the discrete random variable. 13. Let X be a discrete random variable with Supper S = {1, 2, 3, 4) . Its pmf is given below. if x E the Support S f ( x ) = if x @ the Support S 14. Let X be a discrete random variable with Support S = {1, 2}. It pmf is given below. f ( x ) = if x E the Support S if x & the Support S 15. Let X be a discrete random variable with Support S = {1, 2, 3, 4) Its pif is given below. X f (x) = 10 if x E the Support S 10, if x & the Support S

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