1. Researchers identified 242 children in the Cleveland area They examined these children at age 8 and again at age
who had been born prematurely (at about 29 weeks).
20, comparing them to another group of 233 children
not born prematurely. Their report, published in the New
England Journal of Medicine, said the “preemies" en-
gaged in significantly less risky behavior than the others.

Cuántos triángulos forman un diamante

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

Acone is placed inside a cylinder. the cone has half the radius of the cylinder, but the height of each figure is the same. the cone is tilted at an angle so its peak touches the edge of the cylinder’s base. what is the volume of the space remaining in the cylinder after the cone is placed inside it?