Kim bought 600 tiles to put a border around her square swimming pool. She had written down this equation to use to figure out how many tiles to buy but forgot the dimensions of the n x n pool. Solve 4n+4=600 to find n. A. n=16
B. n=80
C. n=149
D. n=150

Researchers are conducting experiments to determine the role of alcohol in the development of depression. after the study is complete, they determine that the relative risk of developing depression is 1.55 with a 95 % ci of 1.2 -1.9. each group is then divided into nonsmokers and smokers. the relative risk for the nonsmokers is 1.12 with a 95% ci of 0.87-1.37. the relative risk for the smokers is 1.7 with a 95 % cl of 1.5-1.9. what type of bias may affect this study? a. procedure bias b. recall bias c. selection bias d. confounding e. lead-time bias