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What is the expected number of good ones you get

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Reference no: EM131648186

Question: Batteries. In a group of 10 batteries, 3 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?

Reference no: EM131648186

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