totie8500 totie8500
  • 15-09-2017
  • Mathematics
contestada

If two events a and b are independent and you know that p(a) = 0.70, what is the value of p(a | b)?

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ghanami
ghanami ghanami
  • 17-09-2017
hello : 
note 1 : 
 p(A|B) = p(A∩B)/ p(B)....(1)

note 2 : 
 A and B independent: p(A∩B) = p(A)×p(B)......(2)
subsct in (1) :  p(A|B) = p(A∩B)/ p(B)
                                   =  (p(A)×p(B))/p(B)
    p(A|B) = p(A) = 0.70            
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