8. Coin Toss Example Let X = 1 if the toss of a six-sided die yields a five, and let X = 0 otherwise. Then Pr[X = 1] = 1/6 and Pr[X = 0] = 5/6. (a) Obtain / = E[X] from first principles. (b) Obtain of = E[(X - #)?] from first principles. (c) Give the Stata commands 2