I'm studying for a CFA exam right now, and one of the study sessions
is about statistics.
Specifically, the use of "Table of the Student's t-Distribution for
one-tailed probabilities"
in the context of performing t-tests.  Where does this table come
from, and how is it
constructed?  The textbook says that the table in it was constructed using Excel.

in excel, tdistribution can be found w/ function:  tdist(x, deg_freedom, tails)

the "Table of the Student's t-Distribution for one-tailed probabilities"

has to do w/hypothesis testing & defining your hypothesis.  They give
probabilities based on some assumption (this assumption is "degrees of
freedom" i.e. # of observations in your expirement).  These
probabilities define the region of rejection under which you could
reject your hypothesis & side with the alternative.

But I don't think the CFA exam will ask you TTEST question, regardless
of what your study manual is telling you.  More likely would be
questions on regression analysis & probabilities/Venn Diagrams...  NOT
hypothesis testing.

see:http://www.cas.lancs.ac.uk/glossary_v1.1/hyptest.html

see bottom: "one sided test"