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I asked /adv/ but they wouldn't help...
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Anonyrnous
I asked /adv/ but they wouldn't help... 2015-11-19 17:31:40 Post No. 7668839
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I asked /adv/ but they wouldn't help... Anonyrnous 2015-11-19 17:31:40 Post No. 7668839 [Report]
Three people are selected at random from a group of 11 men and 7 women. What are the odds that...

a) at least one man is selected
b) two men and a woman are selected

How do I do this? I'm trying to study for a test but I don't know how to approach this problem.
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Anonymous 2015-11-19 17:33:04 Post No.7668844
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Anonymous 2015-11-19 17:33:04 Post No.7668844 [Report]
go back to /mu/
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Anonyrnous 2015-11-19 17:34:18 Post No.7668846
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Anonyrnous 2015-11-19 17:34:18 Post No.7668846 [Report]
>>7668844
I've never been to /mu/ and I don't plan on going there. I need to figure this out.
>>
Anonymous 2015-11-19 17:34:35 Post No.7668847
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Anonymous 2015-11-19 17:34:35 Post No.7668847 [Report]
https://www.khanacademy.org/math/probability/random-variables-topic/binomial_distribution/v/binomial-distribution
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Anonymous 2015-11-19 17:37:52 Post No.7668857
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Anonymous 2015-11-19 17:37:52 Post No.7668857 [Report]
>>7668839
(11/18)^3+3(11/18)^2(7/18)+3(11/18)(7/18)^2

3(11/18)^2(7/18)

baka desu senpai
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Anonyrnous 2015-11-19 17:38:46 Post No.7668860
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Anonyrnous 2015-11-19 17:38:46 Post No.7668860 [Report]
>>7668847
M8, that's gonna drain all my data.
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Anonymous 2015-11-19 17:41:43 Post No.7668866
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Anonymous 2015-11-19 17:41:43 Post No.7668866 [Report]
>>7668857
Wouldn't it be easier to write the first one as 1-(7/18)^3
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Anonymous 2015-11-19 17:42:19 Post No.7668868
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Anonymous 2015-11-19 17:42:19 Post No.7668868 [Report]
>>7668866
Shut up
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Anonymous 2015-11-19 18:02:39 Post No.7668899
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Anonymous 2015-11-19 18:02:39 Post No.7668899 [Report]
>>7668866
>>7668866
assuming that someone can be selected only once, shouldnt that be 1 - (7*6*5) / (18*17*16) ?
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Anonymous 2015-11-19 18:21:26 Post No.7668926
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Anonymous 2015-11-19 18:21:26 Post No.7668926 [Report]
>>7668860
get the fuck out of here mobile norm

no one is going to do your homework for you
>>
Anonymous 2015-11-20 02:06:14 Post No.7669887
[Report]
Anonymous 2015-11-20 02:06:14 Post No.7669887 [Report]
Holy fuck are you stupid
Thread replies: 11
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