Homework Statement
Probability of a car starting up is 0.9
Probability of a car NOT starting up is 0.1
Cars are tested until 2 functional cars are found.
Find Bernoulli probability function associated and PROVE that it is a pdf (probability density function).
Homework Equations...
I'm just curious as to how to prove that a Bernoulli distribution probability function is valid (ie. that it is indeed a probability distribution function). I have a hunch that all we do is add up all of the probabilities associated to every x value, but I'm not sure. Can someone confirm this...