A Researcher Investigates the Impact of Color and Lighting on Mood

Multiple Choice

A researcher investigates the impact of color and lighting on mood at work.He manipulates the paint used in offices, including the presentation of four different colors.He also manipulates lighting by using three different lighting conditions.The null hypothesis for the interaction in this study would be:

A) mood at work is not dependent on paint color.
B) the effect of lighting condition will be present regardless of office color.
C) the effect of office color is not dependent on the type of lighting condition.
D) mood at work will vary across levels of office color and lighting condition.