Medical Wonders Is a Specialized Interior Design Company Focused on Healing

Multiple Choice

Medical Wonders is a specialized interior design company focused on healing artwork. The CEO, Kathleen Kelledy, claims that artwork has healing effects for patients staying in a hospital, as measured by reduced length of stay. Her current client is a children's cancer hospital. Kathleen is interested in determining the effect of three different pieces of healing artwork on children. She chooses three paintings (a horse photo, a bright abstract, and a muted beach scene) and randomly assigns six hospital rooms to each painting. Analysis of Kathleen's data yielded the following ANOVA table: Using $\alpha$ = 0.05, the critical F value is ___.

A) 13.68
B) 19.43
C) 3.59
D) 19.45
E) 3.68