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| rev | Admin | (Created page with "'''Solution: C''' The conditional variance is <math display = "block"> \begin{align*} \operatorname{Var}( X | X \geq 10) &= \operatorname{E} ( X^2 | X ≥ 10) − \operato...") | May 1'23 at 19:52 | +1,062 |