A researcher is interested in examining the effect of background music and lighting on sales in a restaurant,so he wants to conduct an experiment that manipulates different levels of each.Which experimental design would be best to examine the effects of these two treatments at various levels?
A)completely randomized design
B)randomized-block design
C)factorial design
D)interactive design

Question

Quizplus · Accepted Answer

A factorial design is the best choice for examining the effects of two treatments at various levels. In this case, the two treatments are background music and lighting, and they can be manipulated at different levels using a factorial design. This will allow the researcher to examine the main effects of each treatment as well as any interactions between them.

A Researcher Is Interested in Examining the Effect of Background