. A discrete random variable, X, has probability mass function p(x) = c(x – 3)', x--2,-1, 0, 1, 2. (a) Find the value of the constant c. (b) Find the mean and variance of X.

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1. A discrete random variable, X, has probability mass function
p(x) = c(x – 3)', x =-2,-1, 0, 1, 2.
(a) Find the value of the constant e.
(b) Find the mean and variance of X.
Transcribed Image Text:1. A discrete random variable, X, has probability mass function p(x) = c(x – 3)', x =-2,-1, 0, 1, 2. (a) Find the value of the constant e. (b) Find the mean and variance of X.
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