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

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).

Text Solution

Verified by Experts

Given :
`P(X=0)=30\%=\frac{30}{100}=0.3`
`P(X=1)=70\%=\frac{70}{100}=0.7`
Probability distribution is as :
`E(X)=0\times 0.3+1\times 0.7`
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