An advanced course in psychobiology is composed of 30 chemis

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 a single student is drawn randomly from the class, what is the probability that:

a)The student would be a woman?

b) The student would not be a psychology major?

c) The student would be either a biology major or engineering major?

d) The student would be an education major?

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

Solution

.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.