DeWayne Derryberry, Idaho State University, Department of Mathematics Key Concepts: Mosaic plots, two-by-two contingency tables, odds ratios and confidence intervals, conditional probability, hypothesis tests for proportions (likelihood ratio, Pearson's, Fisher's Exact, two sample tests for proportions) Objective Use the results of a retrospective study to determine if there is a positive association between smoking and lung cancer, and estimate the risk of lung cancer for smokers relative to non-smokers
Are RYO cigarettes less harmful than conventional cigarettes
[7] It became the number one cigarette sold in the world by 1966, a position it held until 1972 when Marlboro overtook the brand
What can be done: Stop smoking
The initial intersection of the database with global protected areas shapefile revealed 1,157 records within the boundaries of 251 protected areas (Tables S11, S12)