scarlettgknobloch scarlettgknobloch

01-03-2021
Mathematics

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A battery company produces 20,000 batteries per day. Each day they randomly select 200 to test. If they find that 4 are dead, how many dead batteries would they expect to find among the entire 20,000?

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lupinst0r lupinst0r

01-03-2021

Answer: 400 because when they test 200 they get that 4 are dead wich is 1/50 of 200 so 1/50 times 20,000 is 400

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