Thread: Probability

. A university requires its biology majors to take a course called Bio research. The prerequisite for this course is that all students must have taken either a statistics course or a computer course. by the time they are juniors, 52% of the biology majors have taken statistics, 23% have had a computer course and 7% have done both.
a. What percent of the junior biology majors are ineligible for bioresearch?
b. What is the probability that a junior Biology major who has taken a statistics has also taken a computer course?
c. Are taking these two courses disjoint events? Explain.
d. Are taking these two courses independent events? Explain.

Originally Posted by elenaas

. A university requires its biology majors to take a course called Bio research. The prerequisite for this course is that all students must have taken either a statistics course or a computer course. by the time they are juniors, 52% of the biology majors have taken statistics, 23% have had a computer course and 7% have done both.
a. What percent of the junior biology majors are ineligible for bioresearch?
b. What is the probability that a junior Biology major who has taken a statistics has also taken a computer course?
c. Are taking these two courses disjoint events? Explain.
d. Are taking these two courses independent events? Explain.

B - set of bio-majors
S - set of stat students
C - set of comp science

Draw a Venn Diagram
You are given following in % terms
n(B), n(B/\S), n(B/\C),n(B/\S/\C)

All questions follow from these directly. For part (d) Check P(SC) = P(S)P(C)
for