X is a discrete random variable, and has probability mass function $X \sim \begin{pmatrix} -1 & 0 & 1 & 3 \\ 0.2 & 0.1 & 0.3 & 0.4 \end{pmatrix}$ Find the pmf for $Y = -2X + 1$ and $Z = X^2 - 1$
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Step 1: To find the expected value of a discrete random variable, we multiply each possible value by its corresponding probability and sum them up. Show more…
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