Problem 4- 8 POINTS TOTAL. Let Z (t) be a stochastic process created as a result of switching between the values 0 and 1 according to the events in a Poisson counting process N (t) with a pmf; 1 At k + 1P[N(t)=k]=1+At1+At forkEZ o 4 POINTS Determine the pmf of Z (t) o 4 POINTS Determine the mean function mg (t)