If the mean of a random variable X is 4, then the mean of the new random variable (3X − 2) is: A. 10 B. 12 C. 14 D. 4 Answer: A) 10 Explanation: E(aX + b) = aE(X) + b. Therefore, E(3X − 2) = 3(4) − 2 = 12 − 2 = 10.

imo class 12 probability

If the mean of a random variable X is 4, then the mean of the new random variable (3X − 2) is:

VAVidaara Admin Asked 6d ago 0 views 0 answers

If the mean of a random variable X is 4, then the mean of the new random variable (3X − 2) is:

Answer: A) 10

Explanation: E(aX + b) = aE(X) + b. Therefore, E(3X − 2) = 3(4) − 2 = 12 − 2 = 10.

No comments yet — start the discussion.