Suppose That You Wish to Compare Two Treatments for Preventing

question 14

Essay

Suppose that you wish to compare two treatments for preventing baldness in men. (The measure of baldness you will use is the mean number of healthy hair follicles per square cm.) In some circumstances, you may be able to randomly assign the treatments to the men, and in some circumstances, you may not be able to randomly assign the treatments to the men. Respond to the following questions in a few sentences.
a) If you are testing the hypothesis that the means are equal for the population, how would your statistical procedures differ, if at all, depending on whether you randomly assigned subjects to treatments or whether you merely observed differences in men who chose one treatment or the other?
b) How would your interpretation of the results differ, if at all, depending on whether you randomly assigned subjects to treatments or whether you merely observed differences in men who chose one treatment or the other?

Recognize the patterns and importance of circadian rhythms in regulating sleep-wake cycles.

Understand the different brain wave patterns associated with various states of consciousness.

Describe the physiological and psychological effects of substance use and withdrawal.

Explain how classical and operant conditioning can be applied to modify sleep habits.

---

Definitions:

Coronary Disease

A type of heart disease resulting from the build-up of plaque in the coronary arteries, which can lead to reduced blood flow to the heart muscle and potentially heart attacks.

Physical Disorders

Conditions affecting the body's structure or function that are not due to a mental health issue.

Mental Disorders

A wide range of conditions that affect mood, thinking, and behavior, often characterized by distress and impairment in functioning.

Academic Effort

The amount of work or dedication put into educational activities, aimed at achieving understanding or success in school subjects.