Question

An oil company conducts a geological study that indicates that an exploratory oil well should have a 20% chance of striking oil. Which distribution you will use to find probability that the first strike comes on the third well drilled? *

Answer 1

Geometric distribution with p=0.2.

$P(X=x) = (1-p)^2p$

Note that X is technically a geometric random variable, since we are only looking for one success.