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| revprev | Admin | Jun 14'24 at 23:36 | −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> The lifetime, measure in hours, of the ACME super light bulb is a random variable <math>T</math> with density function <math>f_T(t) = \lambda^2 t e^{-\lambda t}</math>, where <math>\lambda = .05</math>. What is the expected lifetime of this light...") | Jun 9'24 at 4:25 | +498 |