A production line yields two types of devices:
Type1 devices occur with probability p1 and work for an average time T1,
Type2 devices occur with probability p2 and work for an average time T2,
such that p1+p2=1 and T2>T1.
The time a device works is modeled as a geometrical distribution.
Let X be the time a device chosen uniformly at random works.
Find the distribution of X.

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@satellite73

I am having trouble setting it up

ok i have to think
geometric distribution is \(P(n) = p(1-p)^n\) right?

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