A researcher is studying the effects of sex—male and female—and dietary sugar on energy
level. Male and female participants agree to follow either a high sugar or low sugar diet for 8
weeks. The researcher asks the participants to complete a number of questionnaires, including
one assessing energy level, before and after the program. The researcher is interested in
determining whether a high or low sugar diet affects reported energy levels differently for men
and women. At the end of the program, the researcher examines scores on the energy level
scale for the following groups
What statistic could the researcher use to assess the data? (1 point)
Use the information presented in the previous question to discuss one possible main effect that
might emerge from the analysis and one possible interaction that might emerge. (2 points)