Question: A researcher wanted to determine whether there were significant differences in cortisol level between people with Chronic Fatigue Syndrome, those with Irritable Bowel Syndrome, those

A researcher wanted to determine whether there were significant differences in cortisol level between people with Chronic Fatigue Syndrome, those with Irritable Bowel Syndrome, those with Inflammatory Bowel Disease and those with Rheumatoid Arthritis.

Identify both the independent variable and the dependent variable. State how many levels the independent variable/factor has. Check your answers at the end of the book

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