There are 1150 students and all are enrolled in both Bio and Chem. Only 50 got A+ in Chem. 375 got A+ in Biology. 45 got A+ in both Bio and Chem. We...

There are 1150 students and all are enrolled in both Bio and Chem.

Only 50 got A+ in Chem.

375 got A+ in Biology.

45 got A+ in both Bio and Chem.

We select a student at random from the 1150 students.

1. What is the probability that the student got an A+ in Bio but not in chem?
2. What is the probability that the student got an A+ in Chem but not in bio?
3. What is the probability that the student did not get an A+ in Bio or did not get an A+ in Chem?
4. What is the probability that the student got an A+ in at least one of these two courses?
5. What is the probability that the student did not get an A+ in Bio and did not get an A+ in Chem?

At in chemAt in Bid453301_ 330= 0.287e = 770 (got no At )11502 _ 5 - 0.0043511503 - 7 2 PAX in both = 1 - 45 = 0.960911504- 380 = 0.33011505 _7 70= 066961150