In 2009, the percentage of women with children under age 3 who were in the U. S. workforce was closest to that in which of the following previous years?

Science produces progress. An excellent example of this is Mendel's work in

(a) astronomy (b) archaeology (c) heredity (d) psychology

A researcher obtains t(20) = 2.00 and MD = 9 for a repeated-measures study. If the researcher measures effect size using the percentage of variance accounted for, what value will be obtained for r2?

a. 9/20 c. 4/13 b. 9/29 d. 4/24