Consider the following sample data: x1,x2, ,x30 = 0,1,2,0,1,0,0,0,0,0,1,0,0,2,0,0,1,0,1,0,0,0,1,0,2,0,1,0,0,1 We know that the data is distributed i.i.d., and it can take three values 0, 1 and 2. It takes the value 1 with probability p1, and it takes the value 2 with probability p2