Q88Multiple choice
For the following probability distribution: X –4 –3 –2 –1 0 P(X) 0.1 0.2 0.3 0.2 0.2 E(X) is equal to :
- (A)0
- (B)–1
- (C)–2
- (D)–1.8
For the following probability distribution: X –4 –3 –2 –1 0 P(X) 0.1 0.2 0.3 0.2 0.2 E(X) is equal to :