A dietician is studying the data collected in an experiment performed by a colleague. The experiment was designed to test the hypothesis that abnormally high blood urea nitrogen (BUN) levels are directly related to increased protein. Nitrogen in the blood in the form of urea, called blood urea nitrogen (BUN), is a toxic by-product of the breakdown of proteins and is filtered out of the blood by the kidneys. The results of the colleague's investigation are given below.

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