marigirl
  • marigirl
A and B are complementary events. P(A) = 3 x P(B), calculate P (B) ... Complementary events mean that P (A) + P (B) =1 So can I take an algebraic approach and say P(A)+3P(B)=1 x+3x=1 And to say P (B)=0.25
Mathematics
schrodinger
  • schrodinger
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jim_thompson5910
  • jim_thompson5910
I think you meant to say P(A) + P(B) = 1 3*P(B) + P(B) = 1
jim_thompson5910
  • jim_thompson5910
you are correct in saying that P(B) = 0.25
marigirl
  • marigirl
Thank you.

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jim_thompson5910
  • jim_thompson5910
no problem
marigirl
  • marigirl
Oh yea I see the error I madeI was meant to write p (b)

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