I have in my notes that . I also have that . I know how to derive the first part, but how the heck do we know the second thing is true? Does it come from the derivation of the first equation or... what? Help!
I have in my notes that . I also have that . I know how to derive the first part, but how the heck do we know the second thing is true? Does it come from the derivation of the first equation or... what? Help!
is incomplete, I need to know what the distribution is, probably normal
then is a chi-square...
AND I'm sure you're missing an expectation, because you have a random variable equal to a constant.
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If
Then .
Flipping constants gives.... .