We want to know if there is a relationship between how many glasses of water people drink, on average, each day, and how many cavities they have had in their life. The data for N=3 people are presented below. Average daily water 8 2 5 a. Write the null hypothesis. b. Write the research hypothesis. c. What is the critical value, if alpha = .05? d. What is the obtained value (calculate it by hand and show your work)? e. Is there a significant relationship between water intake and cavities? f. Calculate the effect size. Total Cavities 0 3 2

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