anonymous
  • anonymous
event A and B in a sample space S have the following probabilities. P(A)=0.4,P(B')=0.3 and P(A intersect B)=0.2... Help me to find number of sample space?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
What do you mean by "number of sample space"?
anonymous
  • anonymous
did u know abt it n(s) in probabilitty? that include all the value of data..
anonymous
  • anonymous
Oh, cardinal number. Generally, you would need more info than that to figure out the cardinal number exactly, but the minimum possible would be 10, I think.

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anonymous
  • anonymous
Oh oh ohhhh nevermind. Disregard everything I"ve said so far, I get it now.
anonymous
  • anonymous
So P(B) is 0.3, P(A) = 0.4...wait a minute, those can't be the only events, right?
anonymous
  • anonymous
And just noticed it was P(B'), so P(B) is 0.7, which is even worse :/.
anonymous
  • anonymous
so,how we identified the n(s)?
anonymous
  • anonymous
Ok, actually, lets say they're not mutually exclusive events (normally that would be explicit, but oh well). So say A contains 4 events, and B contains 7. Their intersection contains 2. So there are 9 events: 4+7-2. Of course, it could be any multiple of 9 too.
anonymous
  • anonymous
you mean n(s) is 9?
anonymous
  • anonymous
Yeah, n(S)=9, I think that's what they're going for. Sorry I'm not exactly an expert here, but no one else is backing me up, so that's my best guess.
anonymous
  • anonymous
oh i think that 9 at first but i'm not confident..but after u say that,, i confident now..thank u very much k.. =)

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