Question

You are given the following:- P(A and E) =0.19, P(A and E) =0.38, P(A and E) = 0.13 and P(A and E) =0.30 , then find p(A)​

Answer 1

Answer:

If two events A and B are independent then,

P(A n B)= P(A).P(B)

P(A u B)= P(A)+P(B)-P(A n B)

Since A and B are independent, so

P(A u B)= P(A)+P(B)-P(A).P(B)

0.9=0.6+P(B)-(0.6 x P(B))

P(B)(1–0.6)=0.3

P(B)=3/4= 0.75

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