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RaymondMcT
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Dec 12, 2019
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The cases should be flipped
\begin{cases}
0 & \text{ if } k \text{ is odd} \\
\sigma^k (k-1)!! & \text{ if } k \text{ is even}
\end{cases}```
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I think it's correct, isn't it? For example, consider k=1 or k=2.
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In your solution you have k=6 (even) ~ 35, yet you say it should be zero.
k=1 is just E[X] - E[X] = 0
k=2 E[X - E[X]]^2 = Var(x) != 0
Sorry I corrected the code in my comment, didn't just quote.
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Ah, sorry, now I'm with you. Thanks for picking up my silly error :-). I'll fix it.
I greatly appreciate your input @RaymondMcT. The lecture was written in a bit of a rush (see #817) so there might be other typos.
This was referenced Mar 26, 2020
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