A Medical Researcher Wishes to Try Three Different Techniques to Lower

question 10

Essay

A medical researcher wishes to try three different techniques to lower blood pressure of patients with high blood pressure. The subjects are randomly selected and assigned to one of three groups. Group 1 is given medication, Group 2 is given an exercise program, and Group 3 is assigned a diet program. At the end of six weeks, the reduction in each subject's blood pressure is recorded. Use the Kruskal-Wallis H-test to test the claim that there is no difference in the distribution of the populations. Use α = .05. $$\begin{array} { c | c | c } \text { Group 1 } & \text { Group 2 } & \text { Group 3 } \\\hline 15 & 12 & 10 \\16 & 9 & 16 \\13 & 6 & 8 \\19 & 7 & 12 \\17 & 8 & 13 \\12 & 4 & 8\end{array}$$

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Definitions:

Tympanic Membrane

A thin layer of tissue that separates the outer ear from the middle ear and vibrates in response to sound waves.

Malleus

A tiny ossicle located in the middle ear that conveys sound waves from the tympanic membrane to the anvil.

Stapes

The smallest bone in the human body, located in the middle ear, transmitting sound vibrations from the middle ear to the inner ear.

Incus

An anvil-shaped small bone in the middle ear that transmits sound vibrations from the malleus to the stapes.