Compare the Executive Office of the President with the White House Office.  What are some of the offices included in each, and how do they assist the president in carrying out his job?

The numerator of the F-test is

A) a measure based on within-groups error variation. B) the degrees of freedom. C) a measure based on between-groups variation. D) the sum of squares.

If a researcher administered a mood scale to a sample of anxious adults, removed their televisions for two months, and again administered the mood scale after two months of no TV, the researcher would be employing

A) a single-group, posttest-only design. B) an ex post facto design. C) a single-group, pretest-posttest design. D) a pretest-posttest, natural control-group design.