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| revprev | Admin | Jun 14'24 at 22:16 | −222 | ||
| revcur | Bot | (Created page with "<div class="d-none"><math> \newcommand{\NA}{{\rm NA}} \newcommand{\mat}[1]{{\bf#1}} \newcommand{\exref}[1]{\ref{##1}} \newcommand{\secstoprocess}{\all} \newcommand{\NA}{{\rm NA}} \newcommand{\mathds}{\mathbb}</math></div> Let <math>X</math> be a random variable with <math>E(X) = \mu</math> and <math>V(X) = \sigma^2</math>. Show that the function <math>f(x)</math> defined by <math display="block"> f(x) = \sum_\omega (X(\omega) - x)^2 p(\omega) </math> has its mini...") | Jun 9'24 at 3:24 | +505 |