Author Question: How many different conditions are there? a) none b) one c) two d) ... (Read 17 times)

Lobcity

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How many different conditions are there?
 
  a) none
  b) one
  c) two
   d) three

Question 2

Selection is a threat to the internal validity of which of the following designs?
 
  a. Nonequivalent comparison group design
  b. Interrupted time-series design
  c. Regression-discontinuity design
  d. All of the above



fauacakatahaias

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Answer to Question 1

D

Answer to Question 2

A



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