HELP NEEDED NOW!!! Students were asked to write a formula for the length of a rectangle by using the formula for its perimeter,
p= 2l+2w. Three of their responses are shown below.
1.
l=
1
2 P
- W
II.
1
l= (p - 2w)
l=
p - 2w
2
Which responses are correct?
A II and III, only
B I and II, only
© I, II and III
DI and III , only

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