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 | 4th Jun, 2014, 01:23: 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  | 4th Jun, 2014, 03:23: PM