Researchers wish to test the effectiveness of a drug designed to treat depression. Seven clinically depressed patients are given a standardized depression test before taking the drug and are evaluated 4 weeks later using the same test. It is known that the scores from this particular test are not normally distributed. The scores are shown here.
| Patient | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
| Before | 139 | 155 | 125 | 120 | 140 | 145 | 150 |
| After | 122 | 150 | 125 | 120 | 130 | 150 | 155 |
Use a sign test to conclude whether the drug can be associated with a median decrease in depression level. Choose the correctp-value and conclusion. (Useα= 0.05.)
◦
p= 0.5000; there appears to be no median decrease in depression.
◦
p= 0.8125; there appears to be no median decrease in depression.
◦
p= 0.1875; there appears to be no median decrease in depression.
◦
p= 0.1875; there appears to be a median decrease in depression.
A test for iconic sensory memory
Depression
Organizing Drug Information by Therapeutic Classification
Types of Drug Interactions
Clinically Significant Drug-Food Interactions in Dentistry
The 10 Steps to Better Test-Taking