If X has distribution P(X=0)=0.4 and P(X=1)=0.6, then Var(X) is:
If X has distribution P(X=0)=0.4 and P(X=1)=0.6, then Var(X) is:
- A. 0.24
- B. 0.36
- C. 0.60
- D. 0.16
Answer: A) 0.24
Explanation: E(X)=0.6, E(X²)=0.6. Var(X)=0.6−0.36=0.24.
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