One way to estimate a limit for how fast a human can run 26.2 miles is to use the record for the half marathon: 58 minutes and 23 seconds A. At this pace, what would the marathon time be in hours, minutes, and seconds?

B. is the actual time likely to be faster or slower ​

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