Mrs. Davis' gym class has 24 girls and 18 boys. She wants to separate the class into stations Each station must have the same numbers of girls and boys. What is the greatest number of stations Mrs. Davis can make it every student has to participate in a station?

A.2 stations

B.3 stations

C.6 stations

D.7 stations

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