Which is the best example of random assignment of participants in ...

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Which is the best example of random assignment of participants in an experiment?
 
  a) Assigning participants systematically to a treatment condition
  b) Building groups based on matched pairs
  c) Using a method that allows for equal and unbiased assignment of participants to groups
  d) Choosing participants from a local university

Question 2

Generality of experimental results is most dependent upon which factor?
 
  a) Number of participants
  b) Representativeness of the participants
  c) The effect size
  d) Statistically significant differences between groups

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Answer to Question 1

Correct Answer: c

Answer to Question 2

Correct Answer: b

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