Kitchen Depot, a major kitchen remodeling company, decides it wants to investigate factors that might influence consumers to remodel their kitchens. They randomly select 100 of their stores to take part in the proposed research

They investigate the effects of the presentation of the kitchen design plan (black and white versus color) and the type of music played in the stores (classical music versus modern jazz) on the total cost of kitchen remodeling contracts that are signed during a year. Identify the independent and dependent variables in this research.
a) The independent variable is the presentation of the kitchen plan; the dependent variable is the type of music.
b) The independent variable is the cost of the kitchen projects; the dependent variables are the presentation of the kitchen plans and music.
c) The independent variable is the amount of money spent on the projects; the dependent variables are the presentation of the kitchen plans and music.
d) The independent variables are presentation of the kitchen plans and type of music; the dependent variable is the cost of the signed contracts.

ANS: d