Do students at various universities differ in how sociable they are? Twenty-five students were randomly selected from each of three universities in a region and were asked to report on the amount of time they spent socializing each day with other students. The result for the 25 students who attend University X was a mean of 5 hours and an estimated population variance of 2 hours For the 25 students who attend University Y, M = 4, S2 = 1.5 For the 25 students who attend University Z, M = 6, S2 = 2.5 Using the level 0.05, what should you conclude?

What is the null hypothesis? a. The three groups are the same b. The three groups are different c. Students at University X and Y are different but X and Z are the same d. Students at University X and Z are different but X and Y are the same 12. What is the research hypothesis? a. The three groups are the same b. The three groups are different c. Students at University X and Y are different but X and Z are the same d. Students at University X and Z are different but X and Y are the same What is the comparison distribution? show work. a. 0 b. an F distribution of 3 and 72 degrees of freedom c. an F distribution of 3 and 72 degrees of freedom d. an F distribution of 2 and 72 degrees of freedom Explain how you found/know the comparison distribution. What is/are the cutoff(s)? a. 2.74 b. 3.13 c. 3.44 d. 4.303 What is the F ratio? show work. a. 0.08 b. 0.50 c. 2.50 d. 12.50