Prince Burgers and Fries
Prince Burgers and Fries restaurant has created a new sauce that allegedly will reduce the production of body gas associated with eating its gourmet burgers. The manager at the restaurant, Sheila E., recruits 100 customers with a history of gas problems. She has 50 of them (Group A) eat gourmet burgers with the new sauce. The other 50 (Group B) eat gourmet burgers with sauce that looks just like the new sauce but is really just a mixture of mayonnaise and food coloring. Both groups were told that they were getting the sauce that would reduce gas production. Two hours after eating the gourmet burgers, 30 customers in Group A reported having fewer gas problems and 8 customers in Group B reported having fewer gas problems.

A. Which people are in the control group?
B. What is the independent variable?
C. What is the dependent variable?
D. What should the restaurant’s conclusion be?