Problem  Back to Problems Page 
If x is a random variable, show that
(i) E(1) = 1; (ii) E(3x) = 3E(x) and (iii) E(2 + 3x) = 2 + 3E(x) Net Answers : 
Solution  
We know, E (x) = Σ px

Credit : Vijayalakshmi Desu 
Problem  Back to Problems Page 
If x is a random variable, show that
(i) E(1) = 1; (ii) E(3x) = 3E(x) and (iii) E(2 + 3x) = 2 + 3E(x) Net Answers : 
Solution  
We know, E (x) = Σ px

Credit : Vijayalakshmi Desu 
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