A Famous Hypnotist Performs in Meany Hall Before a Crowd

Multiple Choice

A famous hypnotist performs in Meany Hall before a crowd of 350 students and 180 non-students. The hypnotist knows from previous experience that one-half of the students and two-thirds of the non-students are hypnotizable. What is the probability that a randomly chosen person from the audience will be hypnotizable or will be a non-student?

A) 0.330
B) 0.340
C) 0.869
D) 0.670