Answer to Question #306335 in Statistics and Probability for Prinz

Question

Find the mean of the discrete random variable X with the following probability distribution, X={3, 2, 1, 0} and P(X) = {.125, .375, .375, .125}.

Answer 1

The mean of X = ΣX*P(X)

= 3(0.125) + 2(0.375) + 1(0.375) + 0(0.125)

= 1.5

Answer: The mean of X =1.5