The table below shows the number of male and female students
The table below shows the number of male and female students enrolled in nursing at a university for a certain semester. A student is selected at random. Complete parts (a) through (d) :
Nursing majors Non nursing major Total
Male 99 1017 1116
Female 600 1721 2321
Total 699 2738 3437
a Find the probability that the student is male or a nursing major P (being male or a being a nursing major) (Round to the nearest thousandth as needed)
b Find the probability that the student is female or not a nursing major P(being female or not being a nursing major) (Round to the nearest thousandth as needed)
c Find the probability that the student is not female or a nursing major P (not being female or being a nursing major (Round to the nearest thousandth as needed)
D Are the events \"being male\" and \"being a nursing major\" mutually exclusive? Explain a No because there are 95 males majoring in nursing b Yes because there are 95 males majoring in nursing c Yes because one can\'t be male and a nursing major at the same time
Solution
(a)
P(male)= 1116/3437
P(nursing majors)= 699/3437
P(male and nuring majors)= 99/3437
So the probability that the student is male or a nursing major is
P (being male or a being a nursing major)=(1116/3437)+(699/3437)-(99/3437)=1716/3437=0.499
(b)
P(female)= 2321 / 3437
P(not nursing major)= 2738 / 3437
P(female and not nursing major)= 1721 / 3437
P(being female or not being a nursing major)= P(female)+P(not nursing major)- P(female and not nursing major) = (2321/3437)+(2738/3437)-(1721/3437)=3338 / 3437 =0.971
(c)
P(not female)= 1116/ 3437
P(nursing majors)= 699/3437
P(not female and nursing majors)= 99/3437
So the probability that the student is not female or a nursing major is
P (not being female or a being a nursing major)=(1116/3437)+(699/3437)-(99/3437)=1716/3437=0.499
(d)
No because there are 95 males majoring in nursing.

