The mean of a random variable X, taking values 0, 1, 2 with probabilities 0.3, 0.5, 0.2 respectively, is: A. 0.9 B. 1.0 C. 0.5 D. 1.2 Answer: A) 0.9 Explanation: Mean E(X) = Σ(x × P(x)) = (0 × 0.3) + (1 × 0.5) + (2 × 0.2) = 0 + 0.5 + 0.4 = 0.9.

imo class 12 probability

The mean of a random variable X, taking values 0, 1, 2 with probabilities 0.3, 0.5, 0.2 respectively, is:

VAVidaara Admin Asked 6d ago 0 views 0 answers

The mean of a random variable X, taking values 0, 1, 2 with probabilities 0.3, 0.5, 0.2 respectively, is:

Answer: A) 0.9

Explanation: Mean E(X) = Σ(x × P(x)) = (0 × 0.3) + (1 × 0.5) + (2 × 0.2) = 0 + 0.5 + 0.4 = 0.9.

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