It is really helpful to start reading professional research articles to see how these concepts are used in actual study scenarios. Give it a try in this article, where the researchers examined the relationship between patients' perception about coffee consumption and distress symptoms in patients with inflammatory bowel disease:

Barthel, C. Wiegand, S., Scharl, S., et al. (2015). Patients' perception on the impact of coffee consumption in inflammatory bowel disease: Friend or foe? A patient survey. Nutrition Journal, 14(78). doi:10.1186/s12937-015-0070-8

17. The researchers utilized X? testing for many of their results. Write down the specific hypotheses for one of their tests (i.e. one of the specific comparisons made).

18. The researchers utilized X? testing for many of their results. From our textbook, please list

the recurrements neeaed lor usine unis test

19. In your opinion, did the researchers appropriately utilize X2 testing? Please explain and defend your answer by offering evidence or a more appropriate test.