Experimental studies utilize blinding to prevent researchers from biasing their measurements of the patients. But can they guess the treatment? In a study of a psychotherapeutic intervention, clinicians who were blinded were asked to guess what treatment their patients received. Data from that experiment are shown below. Assume that these data are indicative of the population of these treatments. 
a)What is the probability that a correct guess is made for a randomly chosen subject?
b)If a randomly chosen subject received the placebo, what is the probability that the researcher correctly guesses the treatment?
Definitions:
Thoracic Organs
Thoracic organs refer to those housed in the thoracic cavity, including the heart, lungs, esophagus, and major blood vessels.
Posterior Tibial Artery
A major artery of the lower leg, supplying blood to the posterior compartment of the leg and plantar surface of the foot.
Popliteal Artery
The main artery located behind the knee, providing blood supply to the knee joint and surrounding regions.
Continuation
The act or process of going on or keeping on without stopping or being interrupted.
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