1.Blinko is a game in which three dice are rolled. To win the game, a player must roll triples, that is - three of the same number. You roll the dice 20 times.

A.Verify that the situation is binomial. (8 points)

B.Out of 20 rolls, what is the probability you win exactly 4 times? Show your work using the formula for binomial probability. (6 points)

C.What is the probability that you win at least 3 times? (6 points) Note: You may use the calculator to get your answer, but indicate the process you used to arrive at it. Do not use calculator notation!

D. What is the mean number of wins in 20 rolls of the dice? (2 points)