A random variable X takes values 0, 1, 2, 3 with P(X=x) = c(4−x). The value of constant c is:
A random variable X takes values 0, 1, 2, 3 with P(X=x) = c(4−x). The value of constant c is:
- A. 1/4
- B. 1/10
- C. 1/6
- D. 1/8
Answer: B) 1/10
Explanation: Sum P(x) = c(4) + c(3) + c(2) + c(1) = 10c = 1. Thus, c = 1/10.
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