Assume $(X_1, . . . , X_n)$ is an i.i.d. sample from $P = \{f : f$ is a pdf and $E_f|X|< ∞\}$. Use the conditioning approach to find an UMVUE of $τ (f) = (E_f (X))^2$.
Can someone provide a hint for this? No idea where to start.
2026-02-23 10:08:55.1771841335
find the UMVUE of a parametric function
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