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In a meeting, 70% of the members favour ...

In a meeting, `70%` of the members favour a certain proposal, `30%` being opposite. A member is selected at random and let `X = 0`, if he opposed and `X = 1`, if he is in favour. Find `E(X)` and `V(X)`.

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The correct Answer is:
`E(X) = (7)/(10)`, `Var(X) = (21)/(100)`
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