Which of the following is NOT a type of historical evidence?

When considering the decisions errors that can be made in hypothesis testing, one must balance the dangers of Type I versus Type II errors. Usually statistical testing is biased toward avoiding _____ errors

a. mathematical or computational b. Type I c. Type II d. decisional

Dr. Brown finds that results from different methods used to assess the same trait are highly correlated and results from different methods used to assess different traits are not significantly correlated. These results demonstrate which two types of validity respectively?

a) predictive and concurrent b) concurrent and predictive c) discriminant and convergent d) convergent and discriminant