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Given independent events a and b such that p(a)=0.3 and p(b)=0.5, which of the following is a correct statement?

a=p(a|b)=0

b=p(b|a)=0.3

c=p(a|b)=0.5

d=p(a∪b)=0.65

e=p(a∪b)=0.80

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