P(o)=0.5. events a and b are conditional independent events given o and ~o respectively, that is, a and b are conditional independent events given o and a and b are also conditional independent events given ~o. we also know that p(a|o)=p(~a|~o)=0.8, p(b|o)=0.75, and p(b|~o)=0.5. determine p(o|(a∩