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In a group of 15 batteries, 6 are dead. You choose 2 batteries at random. a) Create a probability model for the number of good

In a group of 15 batteries, 6 are dead. You choose 2 batteries at random.

a) Create a probability model for the number of good batteries you get.

b) What's the expected number of good ones you get?

c) What's the standard deviation?

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