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A distribution is a mathematical description of probabilities or frequencies.

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Normal rv's to chi-squared distribution

Question: $Z_1$ and $Z_2$ are independent random variables with Normal Distributions. $E(Z_1)$ = 1 and $V(Z_2)$ = 1; $E(Z_2)$ = 2 and $V(Z_2)$ = 2. …
Arnold J Rimmer's user avatar