A company would like to know if one brand of dish detergent cleans better than another. Fifty dirty dishes are randomly selected and randomly divided into two groups. In one group, each dirty dish will be placed in a container of hot water with Brand A detergent and in the other group, each dirty dish will be placed in a container of hot water with Brand B detergent. What type of sampling is described in this study?
The study divides 50 dishes into two separate groups, with one group receiving Brand A and the other receiving Brand B. These are two samples being compared, not paired data, since each dish is treated with only one brand rather than being matched and tested with both.
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