 
Summary: Math 140
Introductory Statistics
Professor Bernardo Ábrego
Lecture 27
Sections 8.4
Example: Two AIDS treatments
Consider a clinical trial experiment comparing two treatments for
AIDSrelated complex (ARC). The investigators want to find out
if there is a significant difference on the survival rates of patients
who had already developed AIDS. They have two treatments,
patients who were given AZT and patients who were given AZT
+ ACV. Here's the data
62
49
13
AZT + ACV
9041Yes
13169Total
4128No
TotalAZT
