A(n) _____ is a research supplier that provides standardized ...

[jjjetplane]

A(n) _____ is a research supplier that provides standardized information for many clients in return for a fee.
 a. full-service firm
  b. boutique service
  c. one-stop service
  d. syndicated service

Question 2

In true experimental designs, extraneous variables must never be present in the treatment group(s), although they can be present in control group(s) if properly controlled.
 
 Indicate whether the statement is true or false

[meganmoser117]

Answer to Question 1

D

Answer to Question 2

F
Extraneous variables can be present as long as they operate equally on all treatment and control groups. Confounding results occur when extraneous variables operate differently among treatment and control groups.

[jjjetplane]

Thanks for the timely response, appreciate it

[marict]

Gracias!