totie8500 totie8500

15-09-2017
Mathematics

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

Respuesta :

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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