A researcher intends to compare two different treatment ...

[jrubin]

A researcher intends to compare two different treatment conditions. Participants for the first treatment are selected and tested early in the school semester, and participants for the second treatment are selected and tested late in the semester. In this study, the time-of-testing represents a confounding variable.
 
  a. True
  b. False
  Indicate whether the statement is true or false

Question 2

The nonprobability sampling method that combines chain-referral with a statistical weighting system that helps compensate for the fact that the sample was not drawn randomly is known as _______________.
 
  Fill in the blank(s) with correct word

[FergA]

Answer to Question 1

True

Answer to Question 2

respondent-driven sampling
respondent driven sampling

[jrubin]

Wow, this really help

[JaynaD87]

Gracias!