An advanced course in psychobiology is composed of 30 chemistry majors, 50 biolo

Question

An advanced course in psychobiology is composed of 30 chemistry majors, 50 biology majors, 45 psychology majors, 50 engineering majors and 25 linguistics majors.All together, the class has 125 women and 75 men.

If two students are drawn randomly from the class, what is the probability that:

a) Both of them would be men?

b) One would be a linguistics major and one would be a biology major?

c) One would be a male chemistry major and one would be a female biology major?

SHOW ALL THE LONG-HAND CALCULATIONS. PROBLEMS SHOULD BE ORGANIZED IN A LOGICAL FASHION

Explanation / Answer

1. 125/200 = 5/8
.2. (200 - 45)/200 = 155/200 = 31/40
3. 50/200 + 50/200 = 100/200 = 1/2
4. None, there are no education majors.

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