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marigirl
 one year ago
A and B are complementary events. P(A) = 3 x P(B), calculate P (B)
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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
marigirl
 one year ago
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

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jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1I think you meant to say P(A) + P(B) = 1 3*P(B) + P(B) = 1

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1you are correct in saying that P(B) = 0.25

marigirl
 one year ago
Best ResponseYou've already chosen the best response.1Oh yea I see the error I madeI was meant to write p (b)
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