BIOS 576A: Biostatistics in Public Health
Week 3 Practice with Data
For each question provide your Stata code, Stata output, and respond to all questions.

1. Body weight (kg) measurements from a group of 11 males with heart disease and 10 males without heart disease are taken at a particular hospital. Assume that the diagnosis of heart disease is made independently of body weight measurement. With the summary statistics for body weight below, use the Stata calculator, and a 0.05 significance level, to test for a significant difference in mean body weight between the diseased and normal groups. Assume that body weight is normally distributed and the variances are equal.