what is the differnec between these 2 questions | Mathematics | Page 1

valid reef Nov 30, 2023, 9:47 PM

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binomial distribution

frosty elmBOT Nov 30, 2023, 9:47 PM

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valid reef binomial distribution

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obsidian steeple Nov 30, 2023, 9:52 PM

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I think the difference is that the second is about Joseph being a specific winner, the first just takes two random but the second is Joseph and another

valid reef Nov 30, 2023, 10:25 PM

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obsidian steeple I think the difference is that the second is about Joseph being a specific winne...

do you know what id have to do differently for that? the answer is meant to be 0.135 but i cant get it

obsidian steeple Nov 30, 2023, 10:26 PM

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I'm sorry

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I'm not that good at probability

valid reef Nov 30, 2023, 10:55 PM

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al4right

zealous rapids Dec 1, 2023, 12:29 AM

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call joseph J and the friends ABCD
so the first problem we can have the winners as
JA JB JC JD AB AC AD BC BD CD
in the second we can only have the winners
JA JB JC JD

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@valid reef

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so uh you could just find the odds exactly two of them win

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and multiply by how many win

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or

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find the odds joseph wins

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then find the odds exactly 1 friend then wins

#what is the differnec between these 2 questions