A large hospital administers a “compassion burnout” survey to a random sample of nurses. The responses are scored on a scale of 0 = least burnout to 20 = most burnout. The responses of the nurses in the pediatric cancer and obstetrics units are summarized in Table 5.19. Use α = 5%. 

(a) Is there evidence that typical scores differ in the two groups? 

(b) Is there evidence that variability differs in the two groups? 

(c) Why is the normality assumption of great importance in this situation?

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Table 5.19 Summary statistics. Group N Mean S.D. Ped. Cancer 6 12.7 4.2 Obstetrics 9 8.4 4.5