question_answer 1)

Two dice are thrown simultaneously. If X denotes the number of sixes, find the expectation (mean) of X. 

Answer:

Let A = event of getting 6 on the dice.       = {(6, 1), (6, 2), (6, 3), (6, 4), (6, 5), (6, 6), (1, 6), (2, 6), (3, 6), (4, 6), (5, 6)}       Let X is the radom variable  of ?number of sixes?              P(X =1) =             Probability distribution             Expectation of X