While conducting research on a novel anticoagulant, clients are randomly assigned to a control group and treatment groups. The experimental drug is given to the treatment group and the standard anticoagulant drug is given to the control group. The researchers measured the outcomes in both groups and concluded that the novel anticoagulant drug has a better outcome when compared to the standard drug. Which quantitative method does this belongs to?

Kay is a thoughtful and considerate person but has a difficult time making decisions on her own. she relies on her one best friend, someone she has known since childhood, to give her advice on virtually every decision she makes. sometimes kay even asks the friend to make the decision for her. at work, she holds a position far below her potential and has refused several promotion opportunities. she is most likely suffering from personality disorder.