Multiple studies have documented that as one's amount of time ...

[Cooldude101]

Multiple studies have documented that as one's amount of time spent in a sedentary state increases, the likelihood of obesity increases. This is an example of a(n)
 
  a) positive correlation
 b) negative correlation.
 c) zero correlation.
 d) ex post facto study.

Question 2

An experiment in which the researcher does not know which treatment the participants receive is an example of
 
  a) a single-blind experiment
 b) a double-blind experiment.
 c) the good participant effect.
 d) the Rosenthal effect.

[Heffejeff]

Answer to Question 1

A

Answer to Question 2

A