Question

According to the CDC, 16% of American adults experience migraine headaches. Stress is a major contributor to the frequency and intensity of headaches. A massage therapist feels that he has a technique that can reduce the frequency and intensity of migraine headaches.

a. What population parameter is being tested? (1pt)

b.What type of test is called for? (1pt)

c.What is the null hypothesis for this situation? (2pts)

d.What is the alternative hypothesis for this situation? (2pts)

e. A sample of 450 Americans who participated in the massage therapist’s program results in data that indicate that the null hypothesis should not be rejected. What conclusion can be made? (2pts)

f. Suppose in fact that the percentage of patients who experienced migraine headaches is 12%. Identify the type of error and what it means. (2pts)

Answer 1