Q7 of 249 Page 31

If A and B are two independent events such that P(A) = 0.3 and . Find P(B).

Given A and B are independent events =>


Since A and B are independent, A and are also independent


)


By theorem,



0.8= 0.3+(1-P(B))-0.3(1-P(B))


0.8= 0.3+1-P(B)-0.3+0.3P(B)


0.8-1= -0.7P(B)


-0.2= -0.7P(B)




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