(c) A village has five orchards, containing 15, 30, 25, 10 and 20 trees respectively. If the yields (in 10 kg) of these 5 orchards are 18, 35, 29, 12, and 24 respectively and selecting sample of two units at 2nd and 4th position, estimate the total production of five orchards along with standard error using Horvitz-Thompson estimator. Q4. (a) Let (X, Y) have the joint pdf given by 1 ifly |