CBSE Class 12science Answered
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).
Asked by Topperlearning User  04 Jun, 2014, 13:23: PM
Expert Answer
Here, the distribution of random variable X is:
P(X = 0) = 30/100 = 0.3 and P(X = 1) = 70/100 = 0.7
X

0

1

P(X)

0.3

0.7

_{}
Answered by  04 Jun, 2014, 15:23: PM
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