(Solved): 4. If X1,X2, and X3 constitute a random sample of size n=3 from a normal population with t ...
4. If X1?,X2?, and X3? constitute a random sample of size n=3 from a normal population with the mean ? and variance ?2, find the efficiency of 4X1?+2X2?+X1?? relative to 3X1?+X2?+X2??.