Regression coefficient t-test

CFA Level II Quant
#1

From Schweser study books. Don’t understand where the 0.20 in solution comes from.

I think the t-stat is simply 0.20/0.032=6.25

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#2

It should be 0.25/0.032. I think you have the old version. I just checked mine and I don’t see that number 0.2 in the text

#3

Thanks for the clarification!