If the Random Variable X Is Exponentially Distributed with Parameter $\lambda$

question 75

Short Answer

If the random variable X is exponentially distributed with parameter $\lambda$ = 3, then P(X $\geq$ 2), up to 4 decimal places, is: $\begin{array}{|l|l|}\hline\text { A. } & 0.3333 . \\\hline \text { B. } & 0.5000 . \\\hline \text { C. } & 0.6667 . \\\hline \text { D. } & 0.0025 . \\\hline\end{array}$

---

Definitions:

Paleozoic Sandstone

A sedimentary rock formed during the Paleozoic era, characterized by grains of sand consolidated with some form of cement.

Precambrian Granite

A type of ancient granite rock that formed during the Precambrian era, over 541 million years ago.

Erosion Surface

A land surface shaped and leveled by the long-term action of erosion, removing geological features.

Half Life

The time required for half of a radioactive substance to decay by radioactive processes.