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Darya [45]
3 years ago
9

Suppose that a and b are two independent events with p(a)=0.2 and p(b)=0.4. p(a or b.is

Mathematics
1 answer:
Natalka [10]3 years ago
6 0
Recall that

\mathbb P(A\cup B)=\mathbb P(A)+\mathbb P(B)-\mathbb P(A\cap B)

Since A and B are independent, we have \mathbb P(A\cap B)=\mathbb P(A)\cdot\mathbb P(B). So

\mathbb P(A\cup B)=0.2+0.4-0.2\cdot0.4=0.52
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