Only when a fair red dice is rolled more than 4 then a coin is flipped, if the coin flips a head, then a fair blue dice is rolled. If x is representing the sum of the red and blue dice (a dice that is not rolled is considered zero), then ;
(a) Compute the probability distribution function for P r(x = r), as r = 1..12.
(b) Compute μ(x).
(c) Compute σ(x).