• anonymous
The life, X, of the StayBright light bulb is modelled by the probability density function$f(x)=\left(\begin{matrix}2x^{-2} \\ 0\end{matrix}\right)$$x \ge 0$otherwise. Where X is measures in thousands of hours Find the probability that a StayBrite bulb lasts longer than 1000 hours.
Mathematics
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• anonymous
The life, X, of the StayBright light bulb is modelled by the probability density function$f(x)=\left(\begin{matrix}2x^{-2} \\ 0\end{matrix}\right)$$x \ge 0$otherwise. Where X is measures in thousands of hours Find the probability that a StayBrite bulb lasts longer than 1000 hours.
Mathematics

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