STAT 20 Study Guide - Quiz Guide: Social Security Number, High School Dropouts, Shobana
34
STAT 20 Full Course Notes
Verified Note
34 documents
Document Summary
Sid: many studies of the incidence of cardiac disease and food have found a moderately strong positive association between the amount of co ee drunk by subjects and the incidence of heart disease. Answer yes or no and please explain your answer. (2 points: classify the following variables as qualitative or quantitative. That is, in each of these educational groups, the median wage has decline. These studies were so encouraging that two randomized controlled experiments were done, one for colon cancer and the other for lung cancer. The treatment groups were given large doses of vitamin supplements, and the control group just ate their usual diet. The rst experiment found no di erence in the death rates of the two groups (vitamin supplements versus usual diet). The second experiment found that beta carotene, as a supplement, (1 point each) increased the death rate from lung cancer.
