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 _____________.​ Select the correct answer

​​µ 1 = ​µ 2 = ​µ 3

​​µ 1 ≤ ​µ 2 ≥ ​µ 3

​µ 1 ≤ ​µ 2 ≤ ​µ 3

​µ 1 ≥ ​µ 2 ≥ ​µ 3

​µ 1 ≠ ​µ 2 ≠ ​µ 3

Answer 1