I think you’re right because I put the same thing on my quiz
Answer:
Scenario A: Survey
Scenario B: Observational Studies
Scenario C: Experiment
Scenario D: Survey
If it not the answer you can correct me
You multiply -4 to everything inside of the parenthesis which is 20w+12u-8
To get a number to decrease by 21% you multiply it by 0.79 (1-0.21)
r = 0.79
