A classmate designs the following experiment. What advice would you give him to improve upon it? 
A) to specify both groups as receiving zero level of T
B) not to perform a pretest-posttest
C) to randomly assign participants to groups
D) to randomly select participants from the population
Correct Answer:
Verified
Q33: If we wish the results of our
Q34: The following experiment illustrates what design?
Q35: Random assignment of individuals to groups:
A) nullifies
Q36: A pretest-posttest control group design does not
Q37: To select participants from a pool of
Q39: When assigning participants to groups, you should
Q40: Which of the following is not a
Q41: If two groups are equal with regard
Q42: Outline the Solomon four-group design, indicating its
Q43: What is a true experiment according to
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