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

In a meeting, 70% of the members favour and 30% oppose a certain proposal. A member is selected at random and we take X = 0 if he opposed, and X = 1 if he is in favour. Find E(X) and Var (X).

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Probability of members, favouring any proposal on X=1
70 %=70 / 100=0.70
Probability of members, opposing any proposal on X=0
30 %=30 / 100=0.30
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