A random variable takes values 1,3,5 with probabilities 0.2,0.5,0.3. Mean is:
A random variable takes values 1,3,5 with probabilities 0.2,0.5,0.3. Mean is:
- A. 3.2
- B. 3.0
- C. 3.5
- D. 2.8
Answer: A) 3.2
Explanation: 1(0.2)+3(0.5)+5(0.3)=3.2.
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