Andre records how long it takes him (in minutes) to hike a mountain each day for 6 days.
50, 52, 58, 55, 59, 50

The mean number of mintues it takes Andre to hike a mountain is 54 minutes.

Andre plans to hike the same moutain trail one more day. Estimate the time it will take him to complete the trail for the seventh day. Explain your reasoning.

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