APFIVE Random Assignment in Experiments
Which of the following is an example of random assignment?
Study Setup: In an experiment, a computer-generated random number is used to assign subjects into either the treatment group or the control group.
A
Assigning subjects based on the order in which they enroll in the study.
B
Allowing subjects to choose which group they would prefer to join.
C
Sorting subjects by age and then manually placing older subjects in one group and younger subjects in another.
D
Assigning subjects to treatment or control groups using a computer-generated random number process, ensuring each subject has an equal chance of being placed in any group.
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