Melanie and three of her classmates worked as a team to find the experimental probability of a spinner landing on a blue section. Melanie performed 10 trials.
Enrique performed 50 trials.
Veronique performed 300 trials.
Juanita performed 500 trials.

Compare the four experiments. Which student is most likely to get an experimental probability best suited for predicting frequencies?
Melanie
Enrique
Veronique
Juanita

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