Question 7 1 pts What aspects of this experiment controlled for unobserved variables about these men? C] Controlling C] Replication C] Randomization C] Blocking Question 6 4 pts 432 male inmates were released from Maryland state prisons in the early 1970s. Half of these individuals, selected at random, were given financial aid to assist them in their transition to post- prison life and to see if such aid would reduce their rate of recidivism (re-offense and re-arrest). Several other variables were recorded for these men, including: their age at release; their race (a binary variable equaling 1 if Black, 0 otherwise); marital status at release; parole status at release; number of prior convictions; educational attainment (a multilevel ordinal variable); and several other variables. The median age of these men at release was 23. The influence of financial aid on recidivism was evaluated separately for men who were younger than the median age and those who were older than the median age. Among the first (younger) group, 36.89% of men who did not receive financial aid were rearrested before the end of their first year following release, while only 31.07% of those who did receive financial aid were rearrested (a difference of 5.82%). Among the second (older) group, 24.78% who did not receive financial aid were rearrested before the end of their first year following release, while only 14.16% of those who did receive financial aid were rearrested (a difference of 10.62%). For this experiment, match each of the following variables with the role served by that variable in the experiment