Medical Wonders is a specialized interior design company focused on healing artw
ID: 3176519 • Letter: M
Question
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. Kathleen's null hypothesis is _____________.
m 1 m 2 m 3
m 1 m 2 m 3
m 1 m 2 m 3
m 1 m 2 m 3
m 1 = m 2 = m 3
Explanation / Answer
The null hypothesis always contains the sign of equality and it should be the hypothesis of no difference.
This means that the null hypothesis would be that there is no difference in the healing effect of different art paintings.
So,
Kathleen's null hypothesis is:
m1 = m2 = m3
Option E is correct.