Let's say the probability distribution of population x is23P1-00-0202 Where, parameter OE (0,1) is unknown, and N; represents the number of simple random samples(sample size N) from population that are equal to i (i =1,2,3). Try to find the3 unbiased estimator of constants a1, such that= a:N. aN: is and find thei=1 variance of T.