An advertising company is interested in determining if there is a difference in the mean sales that will be generated for a soft drink company based on which shelf the soft drinks are located.There are four possible shelf levels.The ad company wants to control for store size.The following data reflect the sales for one week at each combination of shelf level and store size. Based on the experimental design,the number of treatments is two.

Question

An advertising company is interested in determining if there is a difference in the mean sales that will be generated for a soft drink company based on which shelf the soft drinks are located.There are four possible shelf levels.The ad company wants to control for store size.The following data reflect the sales for one week at each combination of shelf level and store size.  Based on the experimental design,the number of treatments is two.

Quizplus · Accepted Answer

The number of treatments is actually four, as there are four different shelf levels being tested. The fact that store size is being controlled for does not change the number of treatments.

An Advertising Company Is Interested in Determining If There Is