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| rev | 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> by any random variable which takes on values 0, 1, 2, \dots, <math>n</math> and has <math>E(X) = V(X) = 1</math>. Show that, for any positive integer <math>k</math>, <math display="block"> P(X \geq k + 1) \leq \frac 1{k^2}\ ....") | Jun 9'24 at 3:27 | +476 |