A commencement address is a speech delivered at a graduation ceremony

Which of the artistic proofs focuses on the rhetorical use of emotions in order to affect audience decision making?

a. pathos b. ethos c. logos d. cothos

The chi-square (X2) statistic is a value that shows the relationship between expected frequencies and observed frequencies?

a) This statement is true b) This statement is false c) This statement actually defines a t-test d) The statement should use the word "tested" instead of "observed"