Question: estion #2: (5+3) a) A class in advanced physics is composed of 10 juniors, 30 seniors, and 10 graduate students. The is composed of 10

$estion \#2: (5+3) a) A class in advanced physics is composed$

estion \#2: (5+3) a) A class in advanced physics is composed of 10 juniors, 30 seniors, and 10 graduate students. The is composed of 10 juniors. 30 s. If a student is chosen at random from this class 1) Find the probability that the student received A yrade. 71) Find the probability that the student received A grade or he is senior. (ii) Pind the probability that the student roceived A grade, given that he is scnior

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