Formulae for Hypothesis testing for mean diff

CFA Level I
#1

Are we supposed to know the formulas for Mean difference which have the same variance and the one which doesnt

#2

I doubt it. Anyway, both those formulas are bogus in some sense so it’s hard to believe that CFAI would penalize you for using one bogus formula instead of a different bogus formula.

#3

Hehe…

#4

Is JoeyDVivre’s answer still applicable ? Just wanted to confirm as this is a very old post. Thanks.

#5

Nobody questions JDV’s answers.

#6

Lol thanks.

#7

Full disclosure: I know JDV only by his reputation; he’d left the forum before I joined.

Nevertheless . . . .