The volume of a shipping container is 448.656 cubic inches and it can hold 24 smaller boxes. what is the volume of each of the smaller boxes?

a. 18.694 cubic inches
b. 18.693 cubic inches
c. 17.946 cubic inches
d. 18.667 cubic inches

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