Mathematics
Mathematics, 01.02.2021 15:20, ChocCole

NEED HELP ASAP!! In a group of 20 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?

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NEED HELP ASAP!! In a group of 20 batteries, 3 are dead. You choose 2 batteries at random.
a)...

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