# Probability distribution of selecting a type of battery.

In a group of 10 batteries, 3 are dead. You choose 2 batteries at random.
A) Construct a probability distribution for the number of good batteries you get.

B) What is the expected number of good ones you get?

 ISneezeFunny Posts: 4,186, Reputation: 4188 Ultra Member #2 Apr 16, 2008, 10:53 PM
Hypergeometric.

The Hypergeometric Distribution

Has a good example you can follow.

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